Nice! Our apps are definitely very similar (actually the same). I really like the prompt you are given when you want to delete an idea. It's very... bold.
What is it built with? How does Heroku work?
Didn't want people deleting their stuff accidentally. Built it with Rails. Click the "Github" link at the bottom to see the source. Heroku is really smooth (though expensive) Rails hosting. It's a little like magic.