Sounds like a really great offer, but I always thought it would be nicer to offer a multiple random drawings between everyone who sent at least x number of signups. That way, the poor guy who's struggling to feed his family on 15 signups a week and really NEEDS the prize has just as much chance to win as the guy who would think the $1,000 is just a booby prize. The big guys probably won't change their sponsor links JUST to get a crack at $1,000, however if the little guys thought they might win, you'd probably get dozens of people switching over links from other sponsors just for the chance. Good way to increase overall revenue from the people who KNOW they'd never be able to be a #1 seller. Offering one random prize is good, but it wouldn't be enough for most people to think they really had enough of a chance to win to switch links over, but 25 chances might be.
Just a thought. Good luck with it. It's a very generous offer, anyway.
