Now I understand why you would be afraid of users entering words that might trick people into thinking they were more important than they really are. It was more along the lines of a "motto" hack.
I will change it to a hack that allows someone to change their user title based on a Post count option and a time registered option. It also has an option to allow mods to change it at will. Anything else??
Next someone will say "can you let it have HTML" and that will be followed up with "since it has html can you make sure it checks images for size".