Had a brainwave:
The "Bloggers" are the eleitists in the world of Online journaling. The Anti-consumerists and Microsoft users are more likely to get a livejournal than, say, the Mac people.
The Preps, Jocks, well-paid, or the border-line bohemians are on Blogger.
The Punks, Emos, or the misunderstood artists (so basically all artists) get Myspace.
The suffering college students, the bored middle-class, and the working youth get Livejournals.
The Hippies, granola-heads, and underpaid migrant workers still don't have computors, and Cheerleaders keep their thoughts locked inside locked pink notebooks that never fill up.
Occasionally, though, they do get Xangas. (That's pronounced Z-anga, not Xs-anga. Get it right.)