Contest Rules

I love the contests, where I can vote for many pictures. It seems more democratic to me. Imagine a closed FAA contest, where everyone has 1 vote, wouldnt everybody vote for his own picture? The big loser will be the one, who gave his vote to another participant, the big winner is the one with 2 votes.
Hey, i always give a vote to my picture, why not? But I dont have a problem, to give the other 4, 9 or 3463456374 votes to other pictures I also like.