2steppinKJ, I can also see an issue of bullshit entries where a poster is just trying to be witty and funny. We should be voting on originality and technique. I would trust your judgment to just delete entries like that.
Also, I post on an architecture forum with a weekly photo contest. This format would require its own sub-forum and some type of software(I think) that would take the 5 best photos of the week. Each entry makes a poll 1-10 and it is voted on. At the end of the week, the 5 highest voted photos are entered in the finals. Then those are voted upon.
http://www.skyscrapercity.com/forumdisplay.php?f=268 ( I actually won last week!)