Just came across this site yesterday. It a pretty neat idea...All you have to do is guess a few synonyms, and for each correct answer you give, 10 grains of rice are donated through the United Nations World Food Program (WPF) to feed a hungry soul.
The money that pays for the rice comes from advertisements on the page.
Not only are they out to reduce the hunger thats there in the world, they are also increasing people's vocabulary...which translates into some cool office timepass for me :)
How will a measly 10 grains of rice help reduce world hunger??...so far over 580 million grains have been donated...thats a HUGE amount of rice!!
I managed around a thousand grains yesterday...
So check out the site, test your vocabulary and feed some hungry people!