Great job. It would be a lot more addictive if it was in a hot-or-not format -- random sequence of pictures and you get to vote on each one. Each vote shows you the next one.
I am actually going to really consider implementing this. I think you are right. Before I had the option of allowing users to submit photos, but no one really submitted anything so the site kind of died. I realized I need fresh content to make the site addictive, but your idea will take it a step further.