All one has to do is compare the search results of google.com to google.cn and the ones not in google.cn are the specific things the Chinese government is trying to stop.<p>I started a project a while ago called censoredinchina.org which uses this feature to help generate awareness.<p>I haven't published any code yet, but the goal of the site is to generate images of the censored web pages that can be easily embedded in blogs, etc., where they are more difficult for China's human censors to find/stop.