Net 308/508 Internet Collaboration and Organisation S1 2012

Catone, J. (2012). Relax: Twitter's New Censorship Policy Is Actually Good for Activists. Mashable. Retrieved March 23, 2012 from http://mashable.com/2012/01/27/twitter-censorship-activism/ This news article from the online news site Mashable takes a look at the announcement that Twitter will now censor tweets on a country-by-country basis, and argues that this is actually a good thing for online activists. This is contrary to the widespread backlash that has been made against Twitter with users pledging to boycott the service over its new censorship rules. The author points out that Twitter has always been subject to takedown requests, and that this was on a global scale so that if a tweet or user was removed it had to be done for everyone in the world. The author believes it is a lot better that "now, Twitter can remove that tweet in that country, but allow the world to see it". His rationale is that everyone outside of the offending country can still see the tweets, and that if Twitter were to refuse a takedown notice from an oppressive regime it could have its service totally blocked for all users in that country. The fact that Twitter has pledged to increase its transparency in dealing with takedown notices strengthens his argument. I agree with the author on this and find this an especially useful resource as it provides links to circumvent Twitter's technology in an effort to get around censors, and arguments that this new change could even allow the message of censored activists to be more powerful.

This article is of relevance to my chosen topic (the Anonymous online activism group) as it deals with Twitter and the way oppressive governments seek to deal with it's collaborative and organisational power. Mansfield-Devine (2011) discusses how Anonymous use Twitter heavily as a method of collaboration during their activism operations. Though the article says otherwise, if Twitter's censorship were to inhibit this kind of collaboration this could affect the way in which Anonymous organises itself. The reliability of the source is reasonable. Mashable may be a somewhat sensationalist online news website at times, but this article in particular has many links within allowing one to see the sources behind various claims. The article is of considerable relevance to the topic of online movements as it deals with threats to online activism. Twitter itself is subject to pressure to silence of voices of dissension in certain rendering Twitter less useful for activism purposes. I found the article somewhat useful. It highlights that Twitter impervious to control and censorship. It also highlights that Twitter is a powerful tool for organising uprisings and political movements. This article is quite valuable to the overall collaborative resource development project as it is reasonably reliable, deals with the collaborative potential of Twitter and highlights some of the threats to online movements. Mansfield-Devine, Steve. 2011. "Anonymous: Serious threat or mere annoyance?" Network Security 1: 4-10. http://dx.doi.org.dbgw.lis.curtin.edu.au/10.1016/S1353-4858(11)70004-6

Prior to reading this article, I had not been aware of Twitter's new censorship policy related to each individual country. After reading the title of the article, I failed to see how censorship on Twitter could possibly be considered to be a good thing for activists so I was interested to see the writer's arguments. I definitely agree that Twitter's opting to censor certain tweets is the more desirable outcome than a whole country be denied access to the site. Twitter's approach to censorship, something that they don't seem to be able to avoid on some level, has been handled in the best way possible given the circumstances. I believe that transparency of the 'take down requests' has real potential to alleviate some of the frustration users may feel when they notice that something that was there yesterday is suddenly gone today. This method of publically displaying the reason why something has been removed seems to work well for YouTube in similar censorship cases, particularly in relation to copyright cease and desist claims.

Steal this Film is a documentary about bittorrent culture centred around the story of the Swedish torrent tracking website The Pirate Bay. In telling their story, the Pirate Bay members relate quite early on that they are not only a filesharing website but also an organisation for free speech. We see bittorrent organisations as situated within the wider context of media piracy and filesharing networks as clandestine organisations that must be diffuse in order to evade detection by anti p2p groups. The Pirate Bay's struggle against media outlets is elevated to a battle against American cultural hegemony. Within this context Kent's (2011) reading of the swarm as a simulacra of group identity can be seen as a defence - a tactic - as deCerteau (1984) puts it for the weak to re-appropriate the power of the strong. Filesharing is a form of protest. By publicising their struggle, The Pirate Bay build a bridge between physical and virtual communities. The film features spontaneous interviews with people on the street."The internet is too big, you can't fight it, (27mins)" says a girl with blue hair. Is she referring to the network of computers which make up the internet, or the strength of communities which practice filesharing, the linkages and solidarity of people across the world? This footage awakens the reader's conceptions of a link between physical and virtual activities, online collaboration breeds a solidarity between users which can echo beyond the activities of the swarm. We see bittorrent used not solely as a method for obtaining entertainment but as a vehicle for ideological struggle. The faces in the movie are conspicuously youthful and one sees that they collaborate not only in terms of files but also in ideas and viewpoints. We see bittorrent as a tool for worldwide collaboration/change. References Certeau, M. (1984), The Practice of Everyday Life. University of California Press, Berkeley. Kent M (2011), 'Strangers in the Sw

Steal this Film, is a short 30-minute documentary that looks at the social politics and debate about file sharing and the bit torrent client, focusing on Swedish torrent tracking website The Pirate Bay. The documentary outlines how file sharing and copyright is a touchy subject within American laws, and through the documentary we are able to hear differing opinions on who is right and who wrong. The various people that are interviewed who are involved with the Pirate Bay take a 'us against the world' approach and make it clear that technically they aren't doing anything wrong, and through the power of free speech they are making their voice heard. Numerous youths are also interviewed and each seem to be of the copyleft opinion that what they are doing is almost some sort of activism, and believe that these torrent communities are un-able to be stopped. I would also have to agree with this as a 'Pirate' myself and also through the learning that I have undertaken while at university, that this excuse by the Movie/Music industry that they aren't being hurt through piracy is totally utterly false and I think as one of the speakers in the video says "We aren't going to wake up one day and find that all music artists have died because of Piracy". In fact I would go as far to say that because of this cry-baby outlook by these industries that the bit torrent and file-sharing communities have been strengthened because of it.

I was taken aback when I went to download 'Steal This Film' and it popped up as a torrent file in BitTorrent. I suppose I wasn't used to, what I perceived as, 'legitimate' content being provided in the form of a torrent. The film stated, "right now ten million people are using BitTorrent" and indeed, at the time of watching, I was also using BitTorrent. One of the things I found admirable, and also a little surprising, was the resilience of the Pirate Bay founders. Even after being raided and shut down by the authorities, their belief in what they were doing, and their advocacy of free speech, was too strong to just let go. I also found the film interesting in its depiction of the various anti piracy campaigns created by Hollywood film studios juxtaposed with the interviews of young people claiming that the amount of money made by Hollywood is "absurd". Even if crew members and writers are suffering at the hands of film piracy, like the people interviewed, I find it difficult to sympathise with Hollywood's view point when you can safely assume that the largest chunk of proceeds made from any film go to the 'talent' and not those people working so hard behind the scenes. Perhaps Hollywood losing money could be considered a positive outcome, as so many subpar films probably should never have been made in the first place. Perhaps having less money to fund any film on a whim will lead film studios to choose their projects more carefully, resulting in the delivery of quality rather than quantity to film consumers.

Matt Brian, mobile editor for The Next Web, discusses the popularity of pastebin.com among hacking (or perhaps more accurately 'cracking') groups. Brain notes that Pastebin is a tool originally designed for collaboratively editing code, but has since gained popularity among malicious security crackers as a method of releasing stolen data to the public. While there are numerous spinoffs of the simple text-sharing concept, pastebin.com remains the most popular. Searching the pastebin.com website for 'anonymous' or their (now disbanded and arrested) spinoff group 'Lulzsec' reveals a considerable level of Pastebin usage by Anonymous. Manifestos and anouncment seem to be a popular use of Pastebin by Anonymous. For example searching '#opegypt' reveals a list of sites taken down by Anonymous - perhaps it was collaboratively updated while the operation took place? The Anonymous group link to Pastebin.com pastes (or other equivalent websites) through blogs and twitter accounts associated with the Anonymous movement. Brain notes its utility in escaping the 140 character limitation of twitter, whilst still retaining anonymity with minimum fuss. If illegal material was posted on Anonymous blogs such as anonops.blogspot.com, youranonnews.tumblr.com or anonnews.org it would likely violate terms of service and result in blogs being closed. Pastebin.com therefore, provides a suitably nebulous zone for posting illegal content. Brain makes extensive note of the use of Pastebin.com to release sensitive, stolen information to the web. Although the hacking groups mentioned are not always directly related to Anonymous, it highlights the usage of Pastebin.com as a tool for sharing information. Hacker groups could potentially be working on releases or manifestos collaboratively with their peers, although this in not discernible in the final Pastebin product. Brian, Matt. 2011, June 5. "Pastebin: How a popular code-sharing site became the ultimate hacker hangout." The Next Web: Social M

This article provides an interesting (if somewhat brief) account of the Anonymous movement, and associated (as well as un-associated) hacktivist networks, using a relatively simple internet tool and altering the intended usage to suit the purposes of the movement. The article focuses mainly on the usage of Pastebin by an offshoot of the Anonymous movement called LulzSec, and how the group was able to use Pastebin to greatly aid their hacktivism efforts (Brian, 2011). Although now disbanded and with most of its members arrested (Apps, 2012), LulzSec very successfully utilised Pastebin for various leaks and links to their efforts of retrieving data from a number of high-profile organizations. This article touches on another example of the confrontational tactics for raising media awareness outlined by Andrews and Caren (2010), and thus the two articles may provide relevant references for discussions relating to the reactions to hacktivist groups such as LulzSec, as well as providing information regarding another tool used by such movements. In terms of my focus on the Anonymous movement, the article may not provide a direct reference to the divides between individuals within the movement based on motivation for activities under the Anonymous movement. The article does however provide a relevant secondary source for additional discussion relating to the way in which particular offshoots of the Anonymous movement operate. Andrews, K., & N. Caren. (2010) Making the News: Movement Organisations, Media Attention, and the Public Agenda. Retrieved from http://proquest.umi.com.dbgw.lis.curtin.edu.au/pqdweb?did=2527572391&sid=1&Fmt=6&clientId=22212&RQT=309&VName=PQD Apps, P. (2012). LulzSec Arrests Hurt Hacker Groups, Anonymous Movement Hard To Kill. Reuters. Retrieved from http://www.huffingtonpost.com/2012/03/08/lulzsec-arrests-anonymous_n_1331982.html Brian, M. (July 5th, 2011). Pastebin: How a popular code-sharing site became the ultimate hacker hangout. Retrieved fr

Steve Mansfield-Devine, editor of Network Security, analyses the threat of the Anonymous activist hacking group. In doing so he discusses the collaborative tools used to organise the members of Anonymous into a focussed effort. The tools discussed include the Low Orbit Ion Cannnon (LOIC) and various spinoffs, Internet Relay Chat (IRC) and Twitter. Mansfield-Devine's discusses the Anonymous group's usage of the LOIC as a Distributed Denial of Service (DDoS) weapon. Mansfield-Devine makes a clear point that only with enough users is the LOIC effective, making the effective usage of the LOIC a collaborative operation. The more users collaborating with the tool, the more effective it becomes. Mansfield-Devine discusses how Anonymous members are coerced into participating in an LOIC attack, specifying IRC and Twitter as the main forms of mobilisation of members. His discussion highlights IRC as a primary form of organisation, with Twitter being taking a more secondary role in directing potential participants into IRC channels. Mansfield-Devine does note that Twitter became an integral part of Anonymous organisation when their domain names were taken offline by authorities during Anonymous operations. Tweets were sent out to redirect the Anonymous participants into new IRC chat rooms to continue the attack. Overall, this article concisely covers IRC, Twitter and LOIC based aspects of Anonymous collaboration and organisation. Mansfield-Devine, Steve. 2011. "Anonymous: Serious threat or mere annoyance?" Network Security 1: 4-10. http://dx.doi.org.dbgw.lis.curtin.edu.au/10.1016/S1353-4858(11)70004-6

In this article Mansfield-Devine explores the threat of the organisation Anonymous and the collaborative tools they use to organise the group. In relation to this, he specifies that Anonymous uses "Low Orbit Ion Cannnon (LOIC) and various versions, Internet Relay Chat (IRC) and Twitter" as his key tools for facilitating organised attacks on institutions (Mansfield-Devine, 2011, p. 4). This article links to the article 'Kony 2012: The Template for Effective Crowdsourcing?' by Olubunmi Emenanjo, on more than one level, they are both about outside organisations against institutions, and they both undeniably rely on social media and the power of the crowds for the mobilization and facilitation of their actions and recruitment (Emenanjo, 2012). The success of the Kony 2012 campaign and Anonymous's attacks can be pin-pointed to how the organisations are aimed at a particular audience, reinforced by social media platforms, and most importantly how they harnessed networking tools to deliver their messages. However a major difference between the two groups is that the Kony 2012 organisation has a consistent online identity, while Anonymous has anonymity. Little is known about the organisation itself but the tools they utilise (LOIC, IRC, and Twitter) lead us so assume that their audiences engage with the organisation. References Emenanjo, O. (2012). Kony 2012: The Template for Effective Crowdsourcing? Communia. Retrieved from http://stipcommunia.wordpress.com/2012/03/13/kony-2012-the-template-for-effective-crowdsourcing/ Mansfield-Devine. (2011). Anonymous: Serious threat or mere annoyance?. Network Security, 1, 4-10. http://dx.doi.org.dbgw.lis.curtin.edu.au/10.1016/S13534858(11)70004-6

Although much of this article is not particularly useful to my focus on Anonymous, this article still raises some interesting notes. The way in which the author plays down the impact of Anonymous' actions towards the end of this article is of particular interest. The author often refers to the disorganized nature of the Anonymous movement, and suggests frequently that although a number of individuals may be involved, automated 'botnets' are often more effective than Anonymous members (Mansfield-Devine, 2011). For my focus, this is the most important part of the article because of the way in which the author neglects to take note of Anonymous members who do more than simply use LOIC and other DDoS attacks. Although it may be true that Anonymous DDoS attacks may not result in significant, long term damage to their targets, the disruption caused by such attacks can often provide enough distraction for Anonymous hacktivists to retrieve data from said targets. With hacktivist groups within movements such as Anonymous being responsible for the largest amount of stolen data in 2011 (AFP, 2012), Anonymous DDoS attacks could pave the way for much more damage to be done to websites than the temporary service disruptions noted by the author of this article. Mansfield-Devine, S. (2011). Anonymous: Serious threat or mere annoyance? Network Security 1: 4-10. Retrieved from http://www.sciencedirect.com.dbgw.lis.curtin.edu.au/science/article/pii/S1353485811700046 AFP. (2012). 'Hacktivists' biggest data thieves in 2011: Verizon. Retrieved from http://au.news.yahoo.com/thewest/a/-/world/13242086/hacktivists-biggest-data-thieves-in-2011-verizon/

This article, recently published by security firm Imperva, investigates how an Anonymous attack is mounted. A Particularly interesting point is that this article makes no mention of IRC channels, instead painting Facebook, Twitter and Youtube channels as the main methods of communication for Anonymous. Also interesting is that such communication is referred to as recruitment, recruitment of technically savvy hackers and not so technically savvy activists who are willing to participate in the attack. Particular attention should be paid to pages 6-8 which outline the recruitment activities over Facebook, Youtube and Twitter. Imperva outline the technical methods used to stage the attack, mentioning that there are 10 -15 'Anons' working to analyse the victim website for security vulnerabilities. These are more experienced hackers who are searching for a vulnerability that might allow them to retrieve private data from the victim (p.6). Although not mentioned in this article, perhaps these experienced hackers collaborate using Internet Relay Chat. When no vulnerability was found, Imperva notes that Anonymous instead tries a DDoS attack, but instead of employing the LOIC, a web based version is used for ease of participation (p.13). This way, users of any device can be recruited (through social media) into participate in the attack with minimum of barriers to entry. Although this article focusses heavily on the technical aspect of the attack, a significant portion of the article deals with the recruitment of participant through social media, alongside discussion of the online variant of the LOIC collaborative Denial of Service tool. Anatomy of an Anonymous Attack. 2012. Imperva. http://www.imperva.com/docs/HII_The_Anatomy_of_an_Anonymous_Attack.pdf

This document may prove to be quite a significant additional reference to my focus of my chosen topic of the Anonymous movement and hacktivism. This article discusses precisely what Mansfield-Devine (2011) neglected to note; that within the Anonymous movement, there are a number of individuals with significant hacking skills who are able to retrieve valuable data from the targets of Anonymous attacks. The article quite thoroughly deconstructs the order in which Anonymous attacks typically occur, the differences between the two major types of individuals who participate, and circumstances under which Anonymous attacks are generally able to be successfully performed (2012). Of particular interest, is the emphasis placed on the importance of acknowledging the fact that Anonymous attacks are not always as harmless as they may appear. Another interesting note is found within the conclusion of the report. The report suggests that targeted, small-scale data retrieval attacks are the preferred means of attack for the Anonymous movement and that "DDoS is the hacker's last resort" (Anatomy of an Anonymous Attack, 2012). This would suggest that unlike many sources of information regarding Anonymous hacktivism attacks, Imperva has identified the serious nature of many incidents involving the Anonymous movement, which do not necessarily receive as much immediate attention as a simple DDoS attack may. Anatomy of an Anonymous Attack. (2012). Imperva. Retrieved from http://www.imperva.com/docs/HII_The_Anatomy_of_an_Anonymous_Attack.pdf Mansfield-Devine, S. (2011). Anonymous: Serious threat or mere annoyance? Network Security 1: 4-10. Retrieved from http://www.sciencedirect.com.dbgw.lis.curtin.edu.au/science/article/pii/S1353485811700046

Kittur, A., & Kraut, R. (2008). Harnessing the Wisdom of Crowds in Wikipedia: Quality Through Coordination. Carnegie Mellon University. Retrieved 2012, March 19th from http://kraut.hciresearch.org/sites/kraut.hciresearch.org/files/articles/Kittur08-WikipediaWisdomOfCrowds_CSCWsubmitted.pdf Harnessing the Wisdom of Crowds in Wikipedia: Quality Through Coordination is a study that looks into "the critical importance of coordination in effectively harnessing the "wisdom of the crowds" in online production environments". The article suggests that Wikipedia's success is reliant on significant and varied coordination from its users and not just determined by a large and diverse author-base as proposed in other studies (Arazy, Morgan, Ofer, Patterson, Raymond & Wayne, 2006). Elements such as editor(s) coordination methods, article lifecycle, and task interdependence determine whether a large author-base will be effective or counteractive in achieving high Wikipedia entry quality. The study found that unspoken expectations and a shared understanding (implicit coordination) between authors encouraged positive results when collaborating with a large author-base however more editors promoted a negative effect on article quality when using direct communication and verbal planning (explicit coordination). During the early stages of article development, both implicit and explicit coordination tend to promote content quality because author(s) need to establish structure, direction and scope of the article. For these high-coordination tasks, the study found it was more beneficial to have a small or core group of editors to set direction and as the article became more established, value can be maximized by distributing low-coordination tasks, such as fixing grammar, correcting vandalism and creating links, to a larger author-base.

This paper discusses the how online community can increase the size and quality of Wikipedia's article. In Wikipedia 40% of edits have done with the help of discussion page, which they focus on development of policies and procedures, communication and consensus building. Most of the editors read discussion page to know how they can increase the quality of the articles (Kittur & Kraut, n.d). According to my own studies, the most exiting research on Wikipedia belongs on how many times an article needs to have the highest quality? And why some articles have high level of quality and others not? Some contributors like to read and edit articles with similar subject and they do not edit other articles. So, Wikipedia, needs some soft wares to ask contributors' the duties they should do. For example, one article needs more reference link and another one needs more grammar correcting and of course, there are some people who their interest is finding relevant links or there are some others who like to correct grammatical mistake and they just need to know which article needs their help, so, these kind of soft wares can assert to contributors needs of articles and help of contributors Wikipedia can have equal level of quality for its articles (Ram, 2010). Ram, S. (2010). Who does what on Wikipedia? Available on http://www.redorbit.com/news/technology/1832403/who_does_what_on_wikipedia/

Lotan, G., Graeff, E., Ananny, M., Gaffney, D., Pearce, I., & boyd, d. (2011). The Revolutions Were Tweeted: Information Flows during the 2011 Tunisian and Egyptian Revolutions. International Journal of Communications, 5, 1375-1405. Retrieved March 24, 2012, from http://ijoc.org/ojs/index.php/ijoc/article/view/1246/643 This article investigates how information was disseminated via Twitter during the Tunisian and Egyptian revolutions. It is clear that there were advantages in relying upon Twitter and social media during this time, because these sites provided real-time updates that mainstream media could not convey, due to the limitations of the platform, or censorship (Grossman, 2009; p.1399). The use of hashtags or key words assisted in the organisation of information, such as #sidibouzid and #Tunisia (p. 1376; p. 1395). However, the constant and rapid flow of content made it difficult to determine what is false and what is legitimate information - Twitter's strength and weakness in this situation. It is essential to understand how information can be organised and filtered through the positions of 'actor types' (classification of users in this study), making this article valuable to the study of political protests. There were many different actors mentioned but the most important contributors to the dissemination of content were journalists, bloggers, and activists. These actors had a tendency to retweet information from the same actor type or amongst the three aforementioned categories, to essentially create a sense of reliable organisation to the Twitter chaos (p. 1393). The study also concluded that individuals, rather than organisations, were considered more reliable during the uprising (p. 1398). This appears to demonstrate the scepticism associated with mainstream media in a society that no longer wishes to be talked 'at', but rather invo

This article relates my topic in its discussion of Twitter usage in online activism. The online activist group Anonymous (my topic of choice) also performed activist activities surrounding Egypt and Tunisia. Much of Anonymous' activities were organised through the use of Twitter making this article quite relevant. As suggested in the article, Anonymous did appear to have certain high powered actors who highlighted information of particular relevance to the operations, affecting the flow of information through the Twitter network. The article is published in a peer-reviewed journal making it a highly reliable source. It is also quite recent, written in 2011, which is a huge asset given the rate at which social networking technology progresses. The article is also perfectly relevant to the discussion of Twitter usage in political protests. The way that information flows and is determined critical or irrelevant through various actors' retweets is an important topic. I found the article quite useful as the topic is closely related to the online activism performed by the Anonymous group. This article contributes a great deal of value to this collaborative resource development project on a whole, as it is a reliable source, is very recent and it is highly relevant, dealing with Twitter as a collaboration and organisation tool.

As with any critical research involving new technologies the acknowledgment of a 'lack of concrete academic scrutiny and scientific evidence' (Boria et al, 2008) is important. In this article it acts as a timely reminder that mobile devices are still a currently evolving technology. This point serves the reader well when they are trying to position the use of mobile devices and their abilities in sourcing information. There are a number of important points highlighted throughout the article that are directly linked to this evolution. Firstly the evolving role of the consumer that is emerging empowered, sophisticated, critical and well informed. Secondly the developments towards effective leveraging and deriving value from social media-based tools and thirdly the continual shift in consumer behavior away from 'corporate communication' and towards 'peer reviews', ultimately affecting buyer intentions (Boria et al, 2008). Taking the fore noted current evolution of mobile devices into account, a small suggestion that we are 'in the process of replacing phones…' (Boria et al, 2008) all together, can be best understood with reference to traditional mobile technologies. They could not access the Internet. Although this is the only direct reference to a mobile device there is extensive analysis into the sourcing of information by consumers. With out mentioning the Smartphone but accepting its general mainstream adoption, it is easy to assume that consumers sourcing and contributing product information could do so easily from their mobile devices whilst in the act of shopping.

Reference: Boria, Constatinides and Romero. 2008. Social Media: A New Frontier for Retailers?. Retrieved from http://www.utwente.nl/mb/nikos/publications/ecpapers/constantinidessocialmedia.pdf

This article is beneficial because it touches on key issues relating to the retail industry's lack of adaptation and understanding of online technologies. It highlights the future potential of online shopping, identifies non-adaptation of new technologies as a threat whilst pointing out the potential risk in adopting them. There has been a lot of media coverage about this topic in recent months and whilst this paper was written in 2008 it is not until now that many retail giants are utilising online platforms, take David Jones for example. The study mentions the lack of academic resources relating to Web 2.0 technologies, this is similar to the Twitter paper by Burton & Soboleva, 2011 where there is also little research relating to understanding the real value in the adaptation of Twitter by businesses. "Lack of concrete academic scrutiny and scientific evidence is a warning to businesses to be cautious when engaging in Social Media as marketing tools." (Boria et al, 2008). The article also mentions that retailers could misjudge available tools. This to me expresses the uncertainty that many had and might still have in jumping into these technologies and that there may be a general notion of not understanding their real value. Overall the shift in power from the organisation to the consumer is evident and the ubiquitous nature of the Internet through mobile usage adds to this shift. Crowd sourcing here plays a part because consumers have access to other consumers' opinions and recommendations. Web 2.0 is key, when a consumer has a question others can answer it, instead of the business itself, consumers trust other consumers. An attempt of crowd sourcing by retailers is also is evident here, examples are shown where retailers have tried to get customers to become co-producers or creative contributors, this also serves as a way to create stronger customer engagement. Additional referenc