We're doing crowdfunding for equity for small businesses. So we're like Kickstarter aimed at for profit businesses and you get stock (or a revenue sharing agreement)
Hrmm, it'd be much easier (better) to just do it for a fee. Considering most startups fail, and they'd have to setup their corporate structure a certain way to give stocks to more than 75 investors, this may or may not be worth building.
The programming aspect of this concept is easy enough, it's the legal aspect that you guys should do more research on.