My younger daughter (age 14) is on there all the time, playing in the Barton Town forums. It's role playing, and I keep a close eye on things there. I have a membership as well, just to keep an eye on her actually. She loves writing stories, outlines for roleplaying games, and drawing, which is the main attraction for alot of the kids on there. Bear in mind, that anyone on there, could be of any age, but that is the same with any website aimed at kids. The kids do cut loose with swearing a bit here and there,, but the admins and mods do have rules of behaviour on there, and seem to deal with situations pretty quickly. I think for the target age group, it's a very well orgainized site. Alot of thought has gone into it, from how you gain gold to 'buy' outfits for your avatar, to the little surprise events, where you randomly get a pressie of gold, or whatever. Very clever site really.
The only forum that I think might be questionable, is the 'Extended Discussion' forum,, where the topics tend to be more of a college age, or adult nature. A bit like a debate forum, Politics, Science, psychology, Religion, and other topics of discussion that tend to be more adult (not in a naughty sense necessarily) My daughter tends to only stay in the roleplaying forums tho.