Yes. Unfortunately, I've only ever been approached with two ideas: "Facebook for Coupon Clipping" and "Stock Market for Small Business". I've been approached 5 times each for them, and asked to sign an NDA each time, but it's really only been two distinct ideas.
I am curious how anyone thinks "stock market for small business" is a viable idea? Did anyone who approched you do even the most basic due diligence first?
Indeed, they did not. I don't know if recent changes in SEC rules in regards to crowd funding alters anything, but at the time there was definitely no way to do it without running afoul of several regulations.
Plus it's just a bad idea. The sort of businesses they were always talking about (pizza shops, hair salons) are well-served by SBA and traditional business loans.