My Space/Bebo/Face book

I have an account in all of the above :D Except I never use it. I think I like My Space the best because it has these fun quizes, like, "Would you beable to survive in the desert?" and other interesting quizes. Most of my friends and people I know are on Bebo, but personally, I find Bebo not worthwhile to spend one hour on...

Library 2.0/Web 2.0

What can I say? I am completely and utterly CONFUSED!!! I read the articles and went onto other blogs to see what they wrote, but I still don't get what Library 2.0 does. -sigh-