What about free chocolate? Just kidding.
FreeRice.com, FreeKibble.com, and FreeKibbleKat.com are awesome sites for donating food to people and animals who need it.
I personally like Free Rice the most. It has a bunch of different trivia games, and every correct answer donates more rice to the United Nations World Food Program. There are games for vocabulary, art, language, math, and geography. It's really fun, somewhat addictive, and for a good cause. What more could a person ask for?
Free Kibble and Free Kibble Kat have a daily trivia question. Answering the question correctly will donate kibble and cat food for cute, fuzzy, adorable, hungry animals in shelters. These too are very good sites.
I shouldn't have to write anymore about these sites to get you to visit them. In fact, I don't even know why you are still reading this. You should be donating rice and kibble. Get going! Shoo!