The one and only RP I'm currently in is a Godsend (Find it in my profile if you want).

These guys inside didn't make it a clique-based affair despite having been together for many months, we're working together fine and I think we're warming up to each other pretty well. The GM has been awesome so far. The fantasy setting is great and surprisingly original (though my knowledge of the fantasy genre is limited), and the characters and interactions are awesome and doesn't feel forced.

A lot of RPs can stand to learn from this shining example. I'm looking at those centered around cliques mainly who seem to look down on 'newcomers'.