This is great news! Brad Fitzpatrick and Kevin Marks have built a new Google API that will spider XFN links.
You can sign up to February's SemanticCamp by pointing it to a URL with an hCard (or FOAF). Nice.
Chris says that URLs are people too: "You’ve got my URL, now, tell me, what else do you really need?"
TIm Berners-Lee explains what the "graph" part of "social graph" means. I'm still not keen on the term but I really love the idea (although I also disagree about the building blocks required today).