Feed the Hungry
Want a way to feed the hungry and your mind at the same time? Check out this neat site, called Free Rice sent to me by Marci. For every vocabulary word that you answer correctly, 10 grains of rice will be donated. Now, you may not think that's much but yesterday 136,236,930 grains were donated. I'm thinking that probably adds up to a lot of meals.
The rice is bought by advertisers on the site and you can read the FAQs for other details.