FreeRice.com

Twenty grains of rice never sounded so good. FreeRice.com, a vocabulary quiz Web site turned philanthropic effort, is challenging the world one word at a time. It couldn’t be simpler – see a word and identify its correct definition based on the four given choices and twenty grains of rice will be donated to the UN World Food Programme. Wait, twenty grains? That’s virtually nothing, right? Maybe, but at over twenty million hits in its first three months, FreeRice.com has donated over 160 metric tons of rice – that’s enough to feed almost a quarter of a million people.