Our application didn't receive any hits either. I think they focus more on the people then the app. For example: how long have you guys worked together? How many times applied? I think the question about "hacking the world" plays a big part. As every founder knows, the application changes so much during development- that it's not really about the idea- it's about the parters. You need to have a history with your partners, you need to balance each other, you need to be creative and "think outside the box"(hacking). Lastly you need to show previous success. If they're investing time, money, credibility into you - they want to see previous success to know you have the right drive and you are a "winner". Just my thoughts. Good luck on your application!