Keep it clean: Don't use obscenities, don't use clever tricks to run around the profanity filters, and don't link to sites with inappropriate content. The "acid test" Russ and I use is the "Grandmother Rule" -- if it would be inappropriate to say to or show to either of our grandmothers, don't do it. I want a typical 13 year old kid to be able to come here and participate if they want to without feeling uncomfortable. This should be a minor-friendly place. Think about it this way: how do you act around strangers or work acquaintances? You watch your language and you're on your best behavior. That's the ideal we're shooting for here.