learn and feed

Here is a website that I think is absolutely genius: www.freerice.com
The creator initially set it up to encourage his son to study for the SAT's. For every vocabulary question that you answer correctly the site will donate 20 grains of rice to the World Food Programme. The rice is paid for by the sponsors who advertise along the bottom of the webpage. Twenty grains seems like such a tiny amount but it all adds up and it's better than doing nothing AND you can increase your vocabulary.