Posted back in October
Also, something I read about it:
I was talking about this with some people a couple days ago... we worked out that there are about 5,000 grains of rice in a cup, dry. (Given certain assumptions about the size of the average grain of rice - depends on the type, obviously.) That means if you get 500 vocabulary words right, you've managed a whole cup of rice.
Meanwhile, the U.N.'s World Food Program, to whom these donations are made, says they can supply 5,000 cups of rice from a donation of $99 - call it 50 cups for a dollar.
So if you get 25,000 words right -- which, if you could do one every ten seconds and not get any wrong, would take you sixty-nine hours and twenty-seven minutes -- you will have accumulated one whole dollar's worth of rice. Hot damn.
I mean, it's a fun game, and it's certainly good for your vocabulary skills, but don't kid yourself about the rice. If you want to donate food, and your time is worth more than 1.4 cents an hour, give money straight to WFP.