Have fun and learn

I have come across two sites that are rather addictive, and I thought I'd share them with you.

This one tests your knowledge of geography.
http://www.travelpod.com/traveler-iq

This one tests your vocabulary. Plus, for each word you get right, 20 grains of rice is donated to the United Nations World Food Program.
http://www.freerice.com/

Have fun!