"Stickied" are the posts that are permanently stuck to the top of all of the subforums. They contain rules, reminders, all these little things. Might seem like boring classroom-time, but it's a sure way of avoiding needless strikes or bans.
Also, if you haven't - just for fun - browse "The Vats", the trashcan of the forum, just to see what kind of posts tend most to get summarily ditched. NMA (and The Order even more) has a low tolerance for pure randomness. Drunk threads created in the spur *teeend* to go bye-bye within a short time.