This is super cool. It's a website where they quiz you on vocabulary words. For each one you get right they donate 10 grains of rice to a starving person through an international agency. Wow – how easy is that to make a difference?
For those competitive people out there, it also gives you a score based on the difficulty of your ratio of correct and incorrect answers. Ha!
Also – these are serious GRE type words. I'd go here to study for the verbal section if I was taking it again.
Check it out…http://www.freerice.com/index.php