>It would suck. Not for most users. They simply reuse the same login credentials at all the sites they use. Other sites make apps that allow data to flow into

>It would suck. Not for most users. They simply reuse the same login credentials at all the sites they use. Other sites make apps that allow data to flow into Facebook easily. Soon all Facebook users will be able to maintain their contact information over a variety of methods (e-mail, sms, etc.). In the end, we already have a federated network that solves the problem for most people: Facebook.