Free Rice
I love the idea in donating 20 free rice for every vocabulary you get right in http://www.freerice.com, paid by sponsors through the United Nation. The more words you get right, the harder it gets. Brilliant!
They should provide different version of free… websites, like freebooks.com to build a library for the community, or freemedicalsupply.com for medical aids. Different types of questions can be used on each website, like who wrote The Pride and Prejudice, or what is insulin? and gets sponsorship from publishing house and pharmaceutical companies.
