Honestly, some of the games I've rated are quite easy, but I've run in to quite a few games where humor isn't really part of the game (nor do I think it was supposed to) but the Humor rating is still there. It kindda sucks because I don't like giving a game a low rating if it's fun to play. But it's not like the game attempts humor in any way.

Of course there's the flip side, where people will put up 2 or 3 categories, when the rest easily could apply. I don't know if it's because of copyrighted material or whatnot but still! it's aggravating that you can't choose which categories should apply to other peoples games (I'm sure there's cases where this could be abused though :/ )