PDF of slides and notes from my keynote at Acquia's World Government Summit on Open Source in Washington DC October 11, 2012. I talk about how open source enabled the internet as a platform, and how it can enable government as a platform. I talk about examples from the internet and from Code for America's work with cities. I crib shamelessly from some of Jen Pahlka's talks about Code for America, and some of the lessons that can be taken from her work.