When we asked New York writer and programmer Marco Arment to speak at XOXO, he was still developing Instapaper and The Magazine, and Tumblr was an independent startup. Since then, he sold The Magazine to Glenn Fleishman, Instapaper to Betaworks, and Tumblr sold to Yahoo in a billion-dollar deal. One of the best parts of independence is choosing what you work on, and Marco's clearing his plate for something brand new.