Open source is often presented as an either/or proposition, but in fact, any study of open source and other movements that have sprung from the new social dynamics of internet-connected communities, such as Web 2.0 collective intelligence applications, shows us that the story is far more complex. Some projects are open source by license, but cathedral-like in their development practices, while others are closed source by license but create new participatory layers that are open and re-usable. Eric Raymond titled his seminal paper on open source The Cathedral and the Bazaar but he didn't realize the extent to which the most successful projects rely on the connection between the cathedral and the bazaar being a logical AND. In my opening remarks, I'll provide a framework for thinking about three axes of open source success. In particular, I'll focus on the way that successful open source projects optimize along one or more of these axes, but not all of them.