Similar to the FreeRice.com site, Click4Obama.com asks questions and donates online ad space for correct answers. From their "about" page:
Click4Obama has three goals:
- Challenge Americans to lean more about American History, Government, Politics, Race Relations, and Current Events
- Provide everyone an easy opportunity to become involved in the future of America
- Support Barack Obama's dream to bring about real change in Washington
Looks like one to add to my list of donation sites, along with EcologyFund.com, the TheHungerSite.com family, and the afore-mentioned FreeRice.com :-).