I've spent most of my RP time since this place seemed to become mostly inactive over at the Council.
http://thecouncilsrpforum.com/rpforum/index.php
Somewhat active community, though it can get slowed down sometimes for about a week, and never really much unpleasantness among the members. One thing to point out, however, is that while it is free to join, you will not be able to post in any of the RPs until you pass the test given to you by the site mods.
It's not anything really difficult, though- you'll either be given a scene based on a list of preferences that you submit and you must write out said scene as if you were playing it, or as a short story...or, if you have any samples of previous written work by yourself, they'll take that, too. This is mostly for quality control so that the site doesn't become over-run by people who consistently give lazy, single-sentence responses in RPs.