I dont use Xanga either, for the same reasons. I dont like talking to random people unless its a normal conversation like the ones on a forum. Also im too lazy and boring to update news/info about me every day. Or even every week I have a blog right now, but its only because im testing and learning to code/skin Wordpress. Other than that, i dont keep journals.
I had myspace, then i got my own website. I got sick of all my friends putting up random crap in the blog bit or whatever