How to keep someone from stealing my business idea?
I have a great idea for an Iphone app. However, i know NOTHING about app development. I don't have time to learn about how to make apps, and i was wondering if it would be okay to search on Craigslist for someone who knows about development and could make it for me if i pay them. But then i wonder, what is keeping this computer wiz from just saying he doesn't know how to do it, and then turning around and taking my idea and using for himself. I know you can trademark stuff or whatever, but can you do that for just an idea? I thought you can really only protect something if it is already a certain thing.