Run Rabbit Run
first off this game might be not aloud since it takes place in all aspects of the forums, but here's the idea.
It starts in Spam Chat and there can be up to as many players as need be. One person is selected by maramail to be the rabbit, and they are also sent a phrase or a short sentence, for example ' short sizzling sausages '.
They then go and post on as many boards as they like on any of the forums within ten minutes, but they have to include that phrase when they post, for e.g. if somebody created a topic 'How are you guys?' then the rabbit would reply 'Fine! Short sizzling sausages' or something like that.
The other players would then try and work out who the rabbit is, by trying to guess what phrase they were repeating in forums. However there would also be a 'fox' who would be trying to throw people off the scent by posting random phrases and sentences anywhere in the forums, but alternating each time. The fox would also be chosen anonomously.
Hope it makes sense. =D