you should have a hunting week, where (if its possible) you select one person, who cant see the thread, and everyone has to hunt down that person, and there is a reward.(if you do this, you would have to let people in every server). oh yeah, the person would have to be very active ingame, and they shouldnt say anything else about the person, so they wont know what kind of mods they normaly go on...

wouldnt that be fun!