I just wanted to chime in and say (though possibly off topic) that Loren is an extraordinary developer. I saw penflip on ShowHN when he first posted it, and before that when it was simply an idea he threw out here, and immediately signed up. I began writing a book on Clojure using the platform and I couldn't be happier. He also is great at engaging users. Just look at the twitter. He's personally helped me multiple times and even contributed to my project.

So, if you're looking to write. Use penflip. It's awesome. But this really goes to show YC is a cutthroat place to try and get into. It really is amazing how much this system pg has started up has inspired. Just think of the entrepreneurs who have sat and thought of ideas because they know networks like this exist. It's truly an awesome thing for the world.