I agree. However, when you post your idea, you also get a link that you can share elsewhere. In this case, you're essentially using the site as a quick and eas

I agree. However, when you post your idea, you also get a link that you can share elsewhere. In this case, you're essentially using the site as a quick and easy hosting service for your idea. And you get to piggyback on the built-in options for visitors to leave feedback (both anonymous and personal). If you have several ideas, and one of them is getting significantly better results, you'll have a lot more motivation to invest the time, energy and money to set up a more in-depth test for that idea.