I think we were able to get away with those contests in the past because MacRumors was a smaller community. So if we did the avatar contest again, there would be far more entries than the last time. Also, since MacRumors is such a large community, it is more likely for issues within the community to develop and become serious. So having another avatar contest would put too much of a strain on the mods, because they need to work on both the contest and the forums.