Search and Give

There are many search and give sites you can use when you are searching the web. So instead of using google or yahoo use one of these and you will be helping out a charity while doing something you normally do every day.
http://www.goodsearch.com/ You choose the charity you want to help and every search is worth around 1 cent. You can also shop at different online stores through this site to help raise money. I buy from amazon all the time and its great knowing that part of my purchase will go towards charity.
http://www.goodtree.com/ You can register and create an account and also pick out which charity each search goes to. Each search donates around 1/2 a cent for your select charity.
http://www.searchandgive.com/ Pick your favorite charity to search for.
http://www.clicks4cancer.com/ 70% of their revenue goes to various cancer foundations
http://www.yodogo.com/ For every search, they will donate one cent to Unicef and the Worldwide Fund for Nature (WWF).
http://www.ripple.org/ This site allows you to click and search to fight poverty
http://www.theecokey.com/ Powered by google this is an earth friendly website. They donate 40% of their revenue to organizations that remove litter Worldwide. Also Your search results will bring up Eco friendly results for example a search for "dish soap" using the Eco-Filtered Search option delivers results that are limited to eco-friendly, sustainable dish soap.