Consider this: as media companies scramble to identify new and innovative ways to advertise to the sea of nameless, pixeled users who graze through their content each day, a rich supply of highly valuable identity data lies just beneath the surface, left unmeasured and unmonetized.

Facebook is nothing more than perhaps the largest single database of this kind of online identity data: explicit, activity and relationship data. With the development of Facebook Connect, which allows for the “open” exchange of Facebook user data between Facebook and third parties, Facebook could conceivably (and will) create an Facebook Connect ad network (read: data exchange), supplied by the valuable and highly targetable user identity data that is currently siloed on Facebook’s servers. This identity data within Facebook is what makes the activity in “social media” so valuable.

But the centralization of identity data on one or two major networks (such as Facebook, Twitter and MySpace) won’t realize the vision of the pragmatic Web. So, how will the pragmatic Web come to be? How do we realize the power of a dynamic Web that is based on our identities? We do so by empowering individuals to access and control their identity across any site or service, through standards that enable data portability and open Web inter-operability. The resulting vision is that of a highly personalized, dynamic, relevant and remixable Web experience, yielding greater access to information through discovery, communication and collaboration. For enterprise, this could mean the rise of innovative new business models, based on data-driven value exchange.

— saw another link to Alisa Leonard-Hansen’s guest post at ReadWriteWeb; you should check it out if you haven’t seen it yet