Check it out: FreeRice
For every word you correctly guess the meaning of, a sponsor donates 10 grains of rice. It sounds piddily, but it's fun. With folks like me, who are into words/definitions - it's a fun little game with serious results. Learn vocabulary for free while you are at it!!!
I donated 600 grains of rice before I finished. (Level 40)
What's your score??