Pretty simple idea, inspired by THIS thread.
I post a picture, and everyone downloads it, plays around with it and then posts their version of it. After a week or so, I come in, choose the one I like best, and that person posts their own photo. We spend the next week playing with theirs, and then they choose a winner. Repeat ad nauseum.
A few rules...
When you post a photo, leave it as it was straight out of camera.
And don't go overboard with the editing. So no adding in sharks jumping out of the water for extra coolness. The idea is to finish the photo, not to edit it so much that it's unrecognizable.
To start with, here's the first image! Click on it for the full sized version.