This interesting:

There's a social scientist, Danah Boyd, who studies social networking sites and she thinks that Facebook and Myspace seem to be for different class divisions (at least in america):

"The goodie two shoes, jocks, athletes, or other "good" kids are now going to Facebook. These kids tend to come from families who emphasize education and going to college. They are part of what we'd call hegemonic society. They are primarily white, but not exclusively. They are in honors classes, looking forward to the prom, and live in a world dictated by after school activities.

MySpace is still home for Latino/Hispanic teens, immigrant teens, "burnouts," "alternative kids," "art fags," punks, emos, goths, gangstas, queer kids, and other kids who didn't play into the dominant high school popularity paradigm. These are kids whose parents didn't go to college, who are expected to get a job when they finish high school. Teens who are really into music or in a band are on MySpace. MySpace has most of the kids who are socially ostracized at school because they are geeks, freaks, or queers" source: boingboing

I personally think MySpace is just a breeding ground for poor website design and it sux majorly. But then I'm a snobby graduate, so I'm probably proving her point. You're a cunning one Boyd *shakes fist* I woulda got you to, if it wasn't for those emo kids.