I use facebook, I think it is pretty useful to keep in touch with old friends. But I don't spend much time there. I prefer it over MySpace primarily because I don't like the "childish" feel of MySpace. MySpace feels like it targets the 14-16 year olds who thinks the only thing in life relates to music, wear black clothes all the time, and are on the verge of committing suicide. Facebook targets a older audience in my opinion.
I use Facebook, just to make sure all of my old friends are still alive. MySpace is for tweens and the perverts who prey on them.
lol, orkut is the biggest piece of junk i've used. Facebook is a well constructed, well scaled site with a lot of unique features. Myspace on the other hand was an accident that should have never happened. I never understood the reasoning behind people building clones of a site that was so poorly designed and managed. There is still room in the market for innovation that's for sure. Watch my signature in the coming weeks
faceook is crap for people with no lives like all networking sites how people waste hours of there lifes talking about random crap!
I like facebook, I use it instead of email to talk to my friends who went to different universities. Also the marketplace is clean and not littered with spam like most for sale sites.