Its been a while since I looked at social networking online and my conclusion is pretty much the same. Social networking is still antisocial. Here are my reasons:

promotes stalking - You know you've been looking at profiles of people who you sort of know, girls you wish you knew and people you used to know but don't talk to anymore. Most of these people you don't even talk to in real life.

encourages sloth - Add this one to your list of sins. You sit around for hours looking at photos and reading other people's pointless comments. You will get very fat soon.

bad rep - those pictures of you drinking cheap beer from a homemade beer bong and wearing women's underwear on your head are out on the internet. the internet can be accessed by anyone with a computer and internet connection. you do the math.

open to the public - your mom probably uses one, your little sister does, and your manager has access to them too. is there any reason to post embarassing info and photos about yourself for them to see?

no one cares about your imaginary friends - just because you have billy idol and and morrissy listed as your friends it doesn't mean they really care who you are or about your eclectic music tastes.