The term "user-centric" identity is getting bandied about a lot these days. It's generally understood to be a different way of expressing the entire identity transaction as opposed to what might be called the "enterprise-centric" approach traditionally used within provisionin...
My recent post on Google's identity silo was part of a hailstorm (pun intended) of comments that occurred on the email list over at the Identity Gang. All of those fast-flying emails unveiled what I'm now calling the "identity silo paradox."