I want to remind you all the my friend Steve is doing his fourth or fifth monthly photo contest over at Photosaurus. This time, they are offering TWO prizes each for 1st, 2nd, and 3rd Places: one prize for a juried selection and one for popular vote.
I highly recommend entering and I think a monthly contest is definitely the way to go. And I love the two-prize-per-place concept as well. (Actually, I suggested it and he agreed to give it a try.) :)