http://www.freerice.com/

http://news.bbc.co.uk/2/hi/europe/7088447.stm

A little word game provides 10 grains of rice for every correct answer: a great way to improve your vocabulary and do a good deed.

The game works so that it automatically adjusts itself to your language level, so it does not matter if you are mother-tongue or just starting to learn English: everyone can have fun and help!!!

Try it!