Interesting looking socially-oriented, UK-based, second-hand book sales. Probably need to poke this a bit more.

Linked everywhere, but what the hell: it's a cracking nine-minutes Shirkyblast. Listen to what he says; it is good.

Friendship helps people write community into being in social network sites. Through these imagined egocentric communities, participants are able to express who they are and locate themselves culturally.