Small world moment. Andrew Tomkins and I lived in the same dorm at M.I.T. A very nice guy, he was one of the major foosball comptetitors me and my buddy The Fongmaster played against.
Oh yeah, and even though he's not first author, this WWW 2003 paper on how blog communities evolve that lists him looks pretty damn cool.
Memo to self: get a copy of this paper.