Well, if you really want to know, post your YC application. I'm sure people would read it (at least I would) and give feedback. It won't tell you definitively w

Well, if you really want to know, post your YC application. I'm sure people would read it (at least I would) and give feedback. It won't tell you definitively why YC turned you down, but it will probably get you a lot of interesting feedback. (If you don't want to post it publicly, I will read it and give my feedback, but I don't have much experience in this area myself.)