Gee, I now realize I sound like a total dick in the comment above. What I mean is that you can get most people to promote a product as long as they have a match of values and reputation, and the money is right. Given how this is fairly new to devs its going to take a good deal to break the ice. Though I suspect the upside is going to be huge. Maybe a deal similarnto what copywriters get. Base plus a percentage.