It's an alright site, a lot of the forums dip a little too deeply towards inappropriate for a PG-13 rating--but it's mostly because the site moderators haven't gotten around to removing that thread or post yet.
Their rules are very firm and they do everything in their power to protect against cyber bullying and harassment. If you are unsure about this site as a parent--check it out FIRST before you let your kids play, and make sure you turn their filters on (they have a curse-word filter in settings that you can turn on or off, turn it on and keep it on!)
Also warn your kids about cyber predators and other general internet safety tips.
It's a good site especially for older teens and adults with LOTS of income--spending money in their cash shop is the only way to get the "good" and exclusive items--sadly everything nice is too expensive to buy with their virtual currency.
As a now ex user of nearly 8 years, I can say it's a good site, but, I had to leave it because I was tired to my wallet being drained every month--there are things I'd rather spend my money on now.