http://www.tigweb.org/games/
http://freerice.com/category
food force game http://www.wfp.org/how-to-help/individuals/food-force
3rd world farmer http://www.itu.dk/people/hermund/3wf/index_content.html
How to help~World Food Program http://www.wfp.org/how-to-help/individuals/freerice
topics http://www.charitynavigator.org/index.cfm?bay=content.view&cpid=489
top rated charities by subjects http://www.charitywatch.org/toprated.html
Search NGO's by topic http://www.tigweb.org/resources/orgs/