I don't use social networking sites, but I hang out over at two forums,
Wasting Your Life and
NeoGAF. The former is about video games, movies, music, and whatever else. It's a chill place to post. You all should come over and post there. There's cool people there. The latter is a gigantic video game forum with, like, thousands of people logged on every second of the day. I don't normally post on there a lot, but I lurk there a lot because it's a nice place to stay informed on not only video game news, but also non video game news. Otherwise, I'm on AIM talking to a couple of my close friends.