Network-Centric Advocacy showcases the kind of rich data GasBuddy's network of volunteers collects. GasBuddy can then turn around and provide incredibly rich and detailed graphs and maps, with data going back to January 2001. The simplicity of their model, getting people to report the local price of gasoline on the web, drives participation. Think of how this enterprise might be approached by government or business, it wouldn't work as elegantly. One close analog, is how the Federal Government calculates the CPI, for which it has to hire people to visit stores and record the price of various goods.
How can your organization tap into this? Is there a simple way that people can contribute to your mission online?