Okay, this site is pretty cool. They ask word definitions (multiple choice) and for every one you get right their sponsors donate 10 grains of rice to feed the starving. I know ten grains is a crappley small amount, but what the hell it doesn't cost you anything.
I know there are some wordy types who would enjoy this. its an adaptive test meaning that the gets harder the more you get right in a row and easier the more you get wrong. I hovered around level 40 once I leveled off. What's your high score?
http://www.freerice.com/