You're right it's not about the idea. Is it completely off the wall an infeasible? No. Then again, if you had told me facebook's idea, or twitter, I would have

You're right it's not about the idea. Is it completely off the wall an infeasible? No. Then again, if you had told me facebook's idea, or twitter, I would have laughed. Evaluate all the other, more important aspects of partnering with these people (after all, that's what you are doing).