We ran a few of those in the old days when the site was just getting started and we were desperate for photos. I was also living in Japan at the time where there was no shortage of exotic prizes to be found. We never had more than 3 or 4 serious participants in any of the contests (despite the fact that it was dead easy to win prizes), so the concept sort of eventually morphed into me just working directly with individual photographers. I'd be willing to run another one if there's enough interest...
