How good is your vocabulary?

I was sent this link today to Free Rice. It's a great vocabulary game, and you're helping the world's hungry at the same time! Warning though - it's pretty addictive; although, that's a good thing because you'll be sending more rice for each word you correctly identify.

I'm consistently around Level 43 (out of 50), and I've donated over 800 grains today. How about you?