I've been playing with Friendster for a while now, mostly because two separate friends of mine sucked me into it. I've added 12 friends and my "personal network" has some 211296 people in it. I feel so connected to the universe. Probably the most entertaining thing is when you click on some random person and Friendster gives you several disjoint paths from you to them.
One of the weird things about Friendster is that there are a bunch of virtual things in there that you can be friends with (cities, schools, etc.). I suppose somebody here should create the "empeg" person if we want to keep up with the geekiness.