Thank you for applying to Y Combinator; however, your startup was not selected to interview for the upcoming Y Combinator batch. We carefully reviewed thousands of applications and since there's a limit on the number of startups we can interview in person, we had to turn away a lot of promising groups. It's alarming how often the last group to make it over the interview threshold ends up getting accepted to YC. That means there are surely other good groups that fall just below the threshold. Furthermore, a much smaller percentage of late applications are invited for interviews.

Unfortunately we can't give you individual feedback about your application. This page explains why: http://ycombinator.com/whynot/

We sincerely hope and encourage you to reapply for the next batch. Applying multiple times in no way counts against you and a surprisingly large number of companies are funded after applying more than once.

We're trying to get better at this, but it's practically certain that groups we rejected will go on to create successful startups. If you do, we'd appreciate it if you'd send us an email telling us about it; we want to learn from our mistakes.