If you haven’t been to FreeRice yet, click the image above and check it out. The FAQ on their site can explain more in-depth than I, but basically, you play a simple vocab game that sharpens and improves your vocab prowess, while simultaneously donating “free rice” to those in need via the United Nations World Food Program.
How does it work? Advertising. Advertisers of the likes of Macy’s, Apple, American Express, Fujitsu and many more have their icons appear at the bottom of the vocab “game.” That’s it. No pop-ups. No gimmicks. Simple advertising dollars being spent for a bit of good. A novel idea.