I agree with Vashe (the stampede): people that register just to pawn their stuff is annoying. The guy will never post again after selling the rx7 chassis (boy, I'd love to have one though).
I think one of the things that should be done, is to compile a huge general faq for the site, and have it stickied in a thread at the very top of the forum titled "If you're new, read the FAQ for any basic questions you might have." I may have some time freed up, so I might even take on that challenge with people's contributions, of course. I know jeromio and others have created similar ones, or perhaps if separate FAQs can be broken down for each forums, with varios knowledgeable members from each forum contributing to the faq with their specific field of expertise (ie. johnc for suspension, racerx for paint, stony for rb26 motors, etc)