I don't think proper for YC to release there notes. For one, as soon as you release notes, it opens you up to all sorts of criticism and public outing of frust

I don't think proper for YC to release there notes. For one, as soon as you release notes, it opens you up to all sorts of criticism and public outing of frustrations by people that didn't make the cut. Same reason you don't get notes from job interviews, college applications, when you get laid off... Second, while the notes may be helpful. It's not like a little bit of magic YC advice is suddenly going to make you a successful entrepreneur. Not anymore than the thousands of other bits of advice that people publish and founders get. The vast majority of successful startups do not go through YC, and most YC companies fail anyway(albeit they often fail more gracefully as aquihires). People that actually care if they get in need to take a step back and make sure they are founding a company for reasons other than validation.