Welcome to the isle. We do in fact have Role Playing on this site, and a part of the forum dedicated to it. Unfortunatly, there usually aren't enough people on to have a full Role Play, but feel free to try anyways.
It's great if you want to try and RP, but you need to check the dates of previous posts. You have joined RPs which died over a year ago. I don't think there are any active RPs on the Isle at the moment.
However, if you want to try and start a new RP, that's great; seems like things have been just a little more lively around here lately. I don't know how successful it would be, but you might well get some people join.
RolePlayers are always welcome on this site. Too bad it's a bit on the dead side here.. But hello, I'm the RP Mod, I'm here to spy on all RPs and do next to nothing. I used to be an active roleplayer here, but I moved onto other sites.