FreeRice

FreeRice is a clever venture of Poverty.com to harness web advertising revenues for world hunger relief.

How does it work? Just hop onto the FreeRice website and grill yourself for a while with the SAT-like battery vocabulary quiz. Not only will using Free Rice beef up your vocab so you can kick some serious Scrabulous butt, but for each click advertising revenues buy 20 grains of rice for the UN World Food Program.

People need to eat; people need to be educated; people need a few minutes down time at work every once in a while. It's win-win-win. As they say in Chicago, "Click early, click often."