One thing I've found odd, is going to my old workplace I haven't visited in over a year, and feeling like I'd seen some people yesterday, because I 'see' them often on FaceBook. I'm one of those that has 200 'friends', but they're all people I know IRL (except for 2 American friends I made playing WoW together for over a year), and people I'm interested in, but catching up IRL is difficult because I've moved since, and have limited time to get away from work. So yeah, I don't mind FB, but I'm no addict. :P