Marco Arment is the Lead Developer for Tumblr and the creator of Instapaper.
Marco Arment is a web and iPhone software developer in New York City. Marco is the lead developer at Tumblr , a web startup in New York City that lets people create tumblelogs: a quick, low-effort form of blogging. He is also the creator and sole developer of Instapaper.
Previously, Marco was a developer at Vivisimo (the company behind Clusty) in Pittsburgh. His personal blog can be found at marco.org .