Dreamwidth and DJ were the ones I was going to suggest. d: There are others I've heard of and tried, but the only ones I still use are LiveJournal, DeadJournal, Dreamwidth, and Scribbld. (Actually, my Scribbld journal is deleted right now, so it's really just the first three.)
There's this one too: http://www.insanejournal.com/
And this one: http://www.inksome.com/
But yeah, I started on DJ (and probably won't ever leave that one), moved to LJ 'cause it's wayyyy more active, and like Dreamwidth the most right now.
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Hah, yep! :D I use the Boxer style on Scribbld, 'cause it was the only one I really liked over there, and it was a new style for me and was kind of fun. I never used it anywhere else until recently when I decided I actually really like the look of it even if there ARE other styles that appeal to me. So I'm using it here too--just with different colors. It's a nice style, definitely. (:
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Also, I have no idea why I can't figure out how to use OpenID. It would probably make things so much easier.