There seems to be alot of people posting Reposts, or extremely useless threads. And I figure this would be a way to get rid of some of them.
It would sort of be like adding +Rep to someone. But instead your clicking a button on a user to get a thread removed. And if enough people request it to be deleted, it gets moved to a new possible new thread section named "Useless Stuff" or something of the sort.
Im not sure if this is already taking place w/ moving/deleting useless threads by the Admin.
Just throwing some idea's out there.