First of all SYD, hurry up and add an article or something because I am resorting to reading the DAMN FAQ for christ's sake.

Found in this sites FAQ...

How do I show an image below my username?
There may be two images below a username when viewing posts. The first is an image associated with your rank; generally these take the form of stars or blocks indicating how many posts you have made or your status on the forums. Below this may be a larger image known as an avatar; this is generally unique or personal to each user. It is up to the board administrator to enable avatars and they have a choice over the way in which avatars can be made available. If you are unable to use avatars then this is the decision of the board admin and you should ask them their reasons (we're sure they'll be good!)

How do I change my rank?
In general you cannot directly change the wording of any rank (ranks appear below your username in topics and on your profile depending on the style used). Most boards use ranks to indicate the number of posts you have made and to identify certain users. For example, moderators and administrators may have a special rank. Please do not abuse the board by posting unnecessarily just to increase your rank -- you will probably find the moderator or administrator will simply lower your post count.

How about a reputation set-up as well. That could end idiot posters and trolling.