This sounds like a great oppurtunity, but I think for a donation this large you better send a good looking broad with your logo tattooed on her. A shirt just won't cut it. Good luck!
While I couldn't care if people send you money for "support/thanks credits", but the problem I would have with this is that it REALLY cheapens the "effort" anybody puts into the game by allowing people to buy "producer or executing producer" credits when they really didn't do anything... wow... I mean, if somebody gives you $500 will they get developer/designer/artist credit too?
well starting a project is by invitation only, but I have submitted my project's details in hope of a response from them.
OK, I did see a few other iphone projects listed on the site. Have you made your promo video yet? Do you know what percent of projects get accepted?