Without giving too much, as I have mockups and everything designed, and an EER of the basic idea. I just would like help coding it and especially want to do it right which means using TDD, which I don't know too much about. I can get stuff to work in Rails, but testing I haven't done a lot with so would like to collaborate with someone on it.
Anyhow the pitch:
User verifies mobile# and email. User subs to restaurant. User receives free app. Restaurant can send SMS or Email msgs to all subscribers. There is a point system built in, and some gamification, and some other things to make it more sticky, and it will involve a mobile app as well.