I think there is a thread like this.
However, I'm not sure, so Imma not gonna say anything.
I have a Facebook, mostly because my mom's on the OMG-MYSPACE-PREDATORS thing, plus I got it without her knowing and when she found out, she let me keep it...I told her that all my friends from Jersey were there and she let me. (It's true, too.)
I would like a Myspace because it seems to offer more customization.
Plus Myspace Music is pretty neat. I'd like to have a music profile.
(But first I gotta get out a demo CD >.<;;; Procastination...)