The Social Graph - as Brad sees it

Brad's Thoughts on the Social Graph is an interesting paper from a person who understands social networking - the creator of LiveJournal.  Brad Fitzpatrick has looked at key interoperability issues and user requirements that are becoming harder and harder to address as more and more social networks and social-network-look-alikes are popping up.  With him being at Google now, I think this paper shows that he's up to something big.