I think it's been fine here, moderation is only needed when things start to get busy or out of hand. So far most of the posts and comments I've seen don't really call for more moderation or rules.
If there's one thing to open up, perhaps have a game suggestion thread every now and then. I think having another avenue to more participation would be nice. Could theme it up as well, with a focus on PC's strengths (FPS, RTSes, sims, etc), or some hardware theme (low spec days come to mind).