To me its a fundamental issue of Real Life ID vs Online life ID. Facebook is dedicated to replicating the real life social graph - a useful and focused function. But by no means is it representative of all the relationships and multiple identities we create for ourselves online. How then, could FB/Connect be THE total solution for SSO+? By leveraging their social data, I would expect FBConnect to be a bit of a game-changer initially, but ultimately to simply be part of a social SSO landscape, to be used non-exclusively, when and where users want. - Paul Moss from FriendFeed MT Plugin