It's a leap of faith. Help someone do something they want to do if you think it's just as awesome as they do, and some people are obviously going to have a better chance at pulling that off than others. It's really just charity with "thank you" gifts, just you're giving to something that isn't a non-profit. You're helping someone make a product you want to buy, usually with the promise that if it pans out, you get the product for your contribution, plus maybe some other shit. But it's still charity, really. You're giving a few bucks to keep something going, but instead of a charitable organization, it's maybe someone's dream, or the work of a few passionate people trying to create something.