We don't need a rules thread because if a newbie gets out of line, we generally "remind" them of what they're doing incorrectly. We haven't had a major problem thus far with anything, and besides, things are fine as they are. Why do we need to start adding limits and more rules and stuff? It would only serve to make HLP more like all the forums that we try to avoid.
That's what I'm most worried about with all these new members; that we'll become just like the spam-filled myriad of other Gamespy forums, and we will lose what makes HLP unique among the web. I say keep things as they are.