I only really use Twitter nowadays, I LOVE it, I use Deviant Art quite a bit too and I still log onto myspace every couple of days. Youtube I also use regularly, that's about it ;D I have Facebook but I hate it.
I just got a Twitter. It makes me feel like a stalker, to tell you the truth, but my friend made me get one. :XD
I like Facebook for talking to my friends.
The only thing I use Myspace for now is keeping up on music and looking for underground bands. It's really useful for that, but otherwise I don't like it.
Facebook is by far my favorite out of all of them.
I use Twitter and Facebook the most. I have a myspace but I only really use it to talk to my favorite unsigned band. I have a livejournal, but I never use it anymore. Tumblr confuses me.
In my life I've had Myspace, Twitter, Facebook, Youtube, and Tagged. Myspace is kind of middle-schoolish. At least where I live. I haven't been on that in ages. Twitter I use faithfully everyday. Actually like hundreds of times a day. Facebook I use a lot, it's so much better than Myspace. Youtube I use a lot to upload covers and concert vids. I have talked to a few people on there though. Tagged I was obsessed with about a month because of all the European dudes. But I usually only check it like once a month now. >_> I've been meaning to make a LiveJournal but I haven't gotten around to it.
I've got... Bebo, Myspace, Facebook, Twitter, and MyYearbook, although I never use MyYearbook, I just made it becasue I was bored one day >.<. I only have Bebo because pretty much everyone single one of my friends has it, and I guess just cause I've had it so long. :) I only really use Myspace to check band updatess... and Facebook is pretty much awesome, 'nuff said. xD
Myspace, Twitter, Devart, LJ, a german page called SVZ (something like facebook but for pupils only :) ), Lastfm, Glamnation and Mibba of course :tehe:
I use MySpace, Facebook, Twitter, LiveJournal, YouTube, Gaia Online and Vampire Freaks. I'm not really too into MySpace and Vamp. Freaks anymore, though.