GoodSearch is a search engine which donates 50-percent of its revenue to the charities and schools designated by its users. It's a simple and compelling concept. You use GoodSearch exactly as you would any other search engine. Because it’s powered by Yahoo!, you get proven search results. The money GoodSearch donates to your cause comes from its advertisers — the users and the organizations do not spend a dime!

Link to: IEF/Good Search Tools