Confirm Idea - Test ideas against real people with as little work as possible

The "Yes" and "No" buttons are mailto links?! If you're going to go that route, at least add a subject in the links that differentiate between which button was pressed.

I'm not sure making people click "yes" or "no" does anything to confirm an idea, by which I suppose you mean validating a hypothesis for an MVP?

I think Kickstarter or other crowdfunding platforms, where people vote with their wallets, would be a better way to validate an idea.