There is a new social network created mainly for Second Life residents, rather similar to Facebook, only they do not need real names and info and it rewards it's members for activity and every member earns Lindens. It's called Avatar Social Network
It's growing very fast and it's certainly a great website to meet people, socialize and make new friends, and provides a great exposure for Second Life DJs, entertainers, clubs, businesses, designers. It has a blog section where members can post their articles, has it's own forum and members can create their own pages as well. You can upload photos, videos, share stuff with others, it's designed basically to do anything you want to put yourself out there and connect with others.
Avatar Social Network is the very first social network and forum where the members get rewarded for activity so you basically do what you do here or on Facebook, Twitter, Flckr, etc. and you get paid for it. Cool isn't it?
You can sign up here: http://www.avatarsocialnetwork.com