My friend has come up with what I feel is a genius idea for a facebook app. We have searched all over and can't find anyone doing this. I understand we would need to hire lawyers, a coder, etc on that side of it and that is fine. Primary questions: if you have a facebook app posted that people love and flock to, other than donations how do you generate revenue? I understand with a typical website you can put google ads etc on your site and get money per click or per purchase, but with it being a facebook app how can you generate income? Secondary questions: if you create an app that takes advantage of another website already on the internet just with modifications and additions to it allowing it to be utelized on facebook: How does that work in general? Would we need to contact that company and let them know we'll be sending traffic their way or using a free service the prvoide? I'm assuming some sort of royalties will need to be paid in the end, but mostly wondering what I would need prepared for my protection before contacting them.