I'm just going to point you to here.
Namely, "- No "spamming" -- No advertisements, or referral links to other services. We also classify "spam" as short replies (usually fewer than 7 words) which do not contribute to a forum thread in a positive manner. Some forum threads expect short messages (like some forum games), but otherwise short messages are highly discouraged. Do not post for the sake of forum post count... your posts will be removed if we see you posting unhelpful or non-contributing messages just for points.
