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A few weeks ago, we began talking about the new Yahoo! Search open platform. Today, we're releasing more details about two important components of the initiative -- the developer platform as well as our support of a number of semantic web standards.

By supporting semantic web standards, Yahoo! Search and site owners can bring a far richer and more useful search experience to consumers. For example, by marking up its profile pages with microformats, LinkedIn can allow Yahoo! Search and others to understand the semantic content and the relationships of the many components of its site. With a richer understanding of LinkedIn's structured data included in our index, we will be able to present users with more compelling and useful search results for their site. The benefit to LinkedIn is, of course, increased traffic quality and quantity from sites like Yahoo! Search that utilize its structured data.

In the coming weeks, we'll be releasing more detailed specifications that will describe our support of semantic web standards. Initially, we plan to support a number of microformats, including hCard, hCalendar, hReview, hAtom, and XFN. Yahoo! Search will work with the web community to evolve the vocabulary framework for embedding structured data. For starters, we plan to support vocabulary components from Dublin Core, Creative Commons, FOAF, GeoRSS, MediaRSS, and others based on feedback. And, we will support RDFa and eRDF markup to embed these into existing HTML pages. Finally, we are announcing support for the OpenSearch specification, with extensions for structured queries to deep web data sources.

What does all this mean? It means we can expect the web to get itself organized, in a hurry. At stake is a significant amount of traffic from Yahoo search, and anyone else that may choose to build applications on top of this data.

Yahoo’s support for semantic web standards like RDF and microformats is exactly the incentive websites need to adopt them. Instead of semantic silos scattered across the Web (think Twine), Yahoo will be pulling all the semantic information together when available, as a search engine should. Until now, there were few applications that demanded properly structured data from third parties. That changes today.

A lot of you emailed me asking where to find more videos, so I'm delivering the goods. I've expanded the previous list from a paltry 17 to a remarkable 302, and I've included podcasts this time! There were so many videos I had to break them up into different categories for easier skimming. There are no duplicates, however I did place some videos into more than one category when I felt it was appropriate. This list is monstrous, enjoy.

Up until today only a few technologies supported certain standards, the Operator extension for Firefox supports microformats, as will Firefox 3 when it is released, but none of these are big enough or important enough for the mainstream. Adding semantics to a website is a lot of hard work if no-one is around to use it.

This is why Yahoo!’s announcement is so big. Now there are machines reading that data and using it and enriching the web with it, do you, as a developer or site owner, want to miss out on that? Yahoo!’s search is to use microformats initially, to improve their understanding of the data to return more relevant results (and, from the looks of their example with LinkedIn add more detail to their search results). So, will other search engines, I’m looking at Google and Microsoft here, want to miss out on the wealth of data that they aren’t collecting and Yahoo! is?

What could be better, a reason to include semantic technologies in your site, better search results, new, intelligent services? I can only say thank you to Yahoo! for supporting this and giving it the much needed boost.

For users to have true data portability, there needs to be some consensus on both the APIs and the formats needed to transfer / represent this portable data. It may be that a number of APIs and formats are required for different scenarios. The Semantic Web is an ideal means for representing the data to be ported from social websites, in that is well suited (using vocabularies like SIOC and FOAF) to represent how people and all kinds of objects on these sites are connected together (documents, discussions, meetups, places, interests, media files - whatever). Of course other data formats may be used, but most importantly, it would be a waste of time to come up with a bunch of new formats for representing the data that needs to be portable, because a lot of work has been done on how to best provide interoperable, reusable and linked data through efforts like the Semantic Web, AtomPub and the microformats community.

This is reason why Kingsley and a bunch of other people like to call the "Semantic Web" the "Linked Data Web".  Potayto-potato, it's all the same to me.  It’s cool, though.  It lets an application traverse the social graph to do its thing instead of being confined to its own network.  It allows an application on one network to access Person C’s data, on another network, by going from Person A to Person B to Person C, and then to their data.

MicroID is a lightweight identity layer for the web, invented by Jeremie Miller (creator of Jabber). MicroID enables anyone to claim verifiable ownership over content hosted anywhere on the web (social networking sites, discussion forums, blogs, etc.). MicroID is not an authentication or single-sign-on service, just a straightforward method for identifying content ownership that complements existing technologies such as OpenID and microformats. The technology is radically simple and enables developers to build new and unique meta services with minimal effort. It's already being used by the likes of ClaimID, Last.fm, Ma.gnolia, Wikitravel, and Yedda.

Early adopters of the Web rolled up their sleeves to demonstrate what was possible on their own sites (even before animated gifs came along), so perhaps advocates of things like the Web of Data, opening the social graph and DataPortability should begin at home too…

First things first. DataPortability is a brand… its a kind of un-organisation (a bit like BarCamps are un-conferences); a group of people and organisations who have the same philosophy, a philosophy of the portability of data. Every member of DataPortability should push for (advocate/evangelise) portability of data to web-users, developers and organisations.

The DataPortability Project will support other projects/groups working towards data portability (at the moment this explicitly includes communities involved in OpenID, OAuth, Microformats and the Semantic Web). Some members of DataPortability are also involved with legal issues and privacy which are just as important as the portability of data. The DataPortability Project is there to support people into a Web of Data.

Portability of data, or data portability is portable data. In other words, data can be copy/pasted and/or moved from one location to another. This is dependent on accessibility.

The world has changed. At least the marketing world. The era of mass marketing and advertisment as we knew it for many years has passed. Of course TV is not dead but it’s more and more superceded by the internet with all it’s channels for niche entertainment and self expression. Banner blindness and shrinking advertisement effectiveness have added their part. And so companies look out for other ways to reach potential and existing customers.

Add to that the success of the DataPortability Working Group which set policies and technical guidelines in how to create a World Wide Web in which data is more freely flowing around than ever before bringing us closer and closer to seamless networking experience and a semantic web.

This of course is only a glimpse of what might be necessary tomorrow. And the question is of course how far this tomorrow is away. Several things are of course available already or being worked on. The Google Social Graph API is there, blogging and commenting in Plone is worked on, Multimedia support is available, OpenID is as well (but maybe could be enhanced).Creating a social networking layer using e.g. plone.relations and membrane is not too complicated to implement and marking things up with microformats is also no magic.

PR-OWL is an open research work aimed to extend the OWLGo to the OWL Features Webpage (external website). ontology Web language so it can represent probabilistic ontologies. In other words, it is a probabilistic extension to OWL that provides a framework for authoring probabilistic ontologies and is based on the Bayesian first-order logic called Multi-Entity Bayesian Networks (MEBN).

TeleBlog regular Branko Collin gave a nice explanation of how microformats could aid pickups of information from book reviews for Technorati. Josh Gay of the Free Software Foundation, whom I met Friday at a library conference in NYC, has also been a big booster of the concept. I  can see why. As described by Wikipedia, “any page created, or any content added to microformats is placed into the public domain for maximum possible reuse.”

That sounds anti-commerce. But actually microformats could help even commercial sites by, say, bringing more traffic to a book review magazine than it would receive otherwise. Theoretically Yahoo could create a page listing reviews for a certain book and automatically pick up ratings from each publication’s writeup. Such a capability, in turn, might just drive you to visit the sites and see how the reviewers justified the rating. What’s more, other sites could ride Yahoo’s coattails and reproduce the Yahoo page.

Search Monkey will be the first use of structured data by Yahoo, but they could potentially be used to affect other parts of the search results or ranking algorithms in the future, according to Kumar. Yahoo will provide more details at an upcoming developer conference it's planning in the coming weeks.

All very wonderful, right? Well, maybe not - as some SEOs and webmasters say. Their main concern is that by providing such a structured format of their content - content scrapers will need very little skill in stealing their content and repurposing it in a useful manner. SEOs and webmasters don't mind Yahoo getting this data from them, but they know that leaving this easy to use and structured format open to Yahoo will also give anyone else access to their data. Same issue with XML but this is even more fine tuned data, because webmasters can detail minute details about their content

MOAT Server is a application that serves tag meanings (in HTML, JSON or RDF/XML, using content negociation) for any Tag you request. The server is shipped without any data, which means that users have first to define meanings for their tags (thanks to the clients they use, that will then update the server information) to efficiently use it, using data available on the Semantic Web, especially from the Linked Data initiative.

At Mahalo we just rolled out rolled out Microformats for relevant search result pages. So what does this mean, and what are Microformats? Well, they are data classes that help machines and people identify and export information. Data such as contacts and address information is much easier to manage, search engines can also better catalog the info. Yes a little bit of the semantic web of tomorrow….today!