The underlying concepts and the approach are very similar. The idea of a non-assertion pledge (or defensive patent pool) is a refreshing example of forward thinking Businesses and Organizations that recognize the adverse effects that Patent Trolling has on innovation. Google is a great example [1]. The Open Patent Foundation takes this concept, and applies it with a different approach. Instead of choosing a specific focus or scope, we want to allow the Community (as a whole) to drive the creation of Open Patent License(s). The end result would be a set of Licenses that any Person or Organization could use and apply towards any Intellectual Property or Patents they may own. So some of them may end up being specific to Software. others may end up being specific to Utility Patents. And yet others might end up being non-specific in terms of application, but specific to a Time Period, or perhaps Distribution Guidelines. It would be up to the Community to decide what we want to use, and that is what (IMO) makes the entire concept so powerful. It is not implied to be a better approach, just a new one. In the end, all of these types of movements are positive. The end goal is to accelerate innovation and stop Patent Trolling.