There's this really cool social networking site I discovered a few days ago called Second Sanctum of the Wise. It's kinda hard to explain, but it's really cool. It was created by this guy named Abwayax who also runs a classic Cartoon Network site called Operation Time Capsule. Basically it's really cool and it has an arcade, forums, a chatroom, and more. Check it out:
http://wiki.epic.abwayax.com/wiki/