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The Echo Nest is a music technology company founded by two MIT Media Lab PhDs. The Echo Nest’s proprietary music analyzer API automatically analyzes audio (e.g., aif, wav, mp3, m4a), and generates an XML file describing the musical and structural content of the music. Computation takes about 1/50th of the duration of the track and the text output is about 1/20th of the size of its corresponding mp3.

Unlike other automatic methods of acoustic feature extraction, which progress strictly on raw audio signal, our technology was inspired by how people perceive music.  As a result, developers are able to automatically extract and use a wide array of time-based musical attributes for any song, including: timbre, pitch, rhythm, loudness, onsets, beats, tempo, sections, time signature, key, etc.

Social networks are great: you can stay in touch with friends all across the world and find new ones based on your interests. But often, social networks serve a single purpose or interest. For instance photos, videos or classmates from school and university. This is not a problem by itself, but when you want to keep track of all your contacts in all these social networks, this is a lot of work for you to update your contacts list in all the social networks you are in. And you also might need to get a member of a social network, although you're not interesed in the subject, but only want to track your friends activities. NoseRub only defines the social network and some basic content types like media, links, micropublishing and text. You can now add all your contacts to a NoseRub network and aggregate several social networks into just one. And you always have full control of your data, as you can install NoseRub on your own server and have it connect to other servers out there.

Users can now access their matchmine MatchKey, a colorful sphere that represents a person's interests, with the single-sign-on OpenID, import user preference information from Web sites, and export their MatchKey user preference information. Users can share their MatchKey with any Web site in matchmine's "media discovery network." Each time someone uses their MatchKey, it "learns" preferences and retrieves information that matches preferences.

When Facebook joined the DataPortability.org Workgroup a few weeks ago, the press described the move both as a “bombshell” as well as “brilliant PR”. In order to understand what Facebook’s decision to join actually means a little bit better, I spoke with Chris Saad, Co-Founder and Chairperson of DataPortability.org.

IF: What does it mean for companies like Facebook to “join” DataPortability.org? CS: It means they agree to engage in the conversation and work towards a blueprint for maximum interoperability between applications.

IF: Who controls the direction of DataPortability.org? CS: DataPortability is managed like a wiki - participants step up to the plate and just get things done. Some of the most active participants join the Steering group to help set the direction.

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.

Historically, online media tend to start this way. The early services, such as CompuServe, Prodigy or AOL, began as “walled gardens” before they opened up to become websites. The early e-mail services could send messages only within their own walls (rather as Facebook's messaging does today). Instant-messaging, too, started closed, but is gradually opening up. In social networking, this evolution is just beginning. Parts of the industry are collaborating in a “data portability workgroup” to let people move their friend lists and other information around the web. Others are pushing OpenID, a plan to create a single, federated sign-on system that people can use across many sites.

Would a service like Matchmine fall prey to Strands’ do-it-yourself approach to providing specific ways in which individuals can use their own data portability information? Not likely. Data portability, even with the help of Strands, will still take some time to permeate online social media. And services like Matchmine will continue to evolve, and will likely find peripheral ways in which to further monetize the underlying social behavior that goes into the very use cases towards which data portability will be applied.

My last column discussed the brand utility supported entertainment model in which content providers and marketers work upstream to create customized complimentary experiences. One option would be to align this model with the open standard objectives of DataPortability.org. Their mission: to gather "existing open standards into a blueprint for a social, open, remixable Web where your online identity, media, contacts and content can follow you wherever you go."

For brands and content creators, that means conversation would truly have to be initiated by the user. The user would own the data, and the brand content offering would have to be valuable enough to warrant an exchange. In essence, brand content would be bought with "data currency."

There are brand enthusiasts who participate in campaigns on an ongoing basis. Yet each time they return, these fans must register and sign-up for the full experience. If the brand were to embrace technologies such as OpenID, not only would it provide their fans access to cross-promotional properties around that campaign, it would also provide easy access to all future campaigns. And with future potential of data portability, people could take those experiences with them, introducing content to friends and hopefully igniting passionate new fans.

As the web grows exponentially in scale and complexity, an issue that becomes increasingly pressing is data ownership. There has been a lot of noise lately about how Facebook Connect, Google Friend Connect, and even MySpace’s Data Availability.

The Data Portability Project is trying very, very hard to solve these serious issues. They’re seeking to unite the socio-rhetorico-legal precedent with the growing list of open technologies and specifications (OpenID, OAuth, RSS, OPML, MicroFormats, Creative Commons, to name a few) and make sure that these proprietary bits, bytes, friends, enemies, birthdays, activies, pictures, videos, lifestyles, etc. are made open to the content creators (read: YOU, not Mark Zuckerberg).