You guys should do this. It's a fun little vocabulary thing, and for every one you get right, they donate ten grains of rice in an effort to alleviate hunger in the world. I've already hit 7000 and am still playing when I get free time. I know at least Adrian will have fun with it. It doesn't take long. You don't have to sign up for anything. Just click the link.
http://www.freerice.com/index.php