GoodSearch search engine donates half its advertising revenue, about a penny per search, to the charities its users designate.
http://www.goodsearch.com/GetInvolved.aspx#supporters
GoodShop.com is an online shopping mall which donates up to 37 percent of each purchase to your favorite cause. Hundreds of stores including Amazon, Target, Gap, Best Buy, ebay, Macy's and Barnes & Noble have teamed up with GoodShop and every time you place an order, you’ll be supporting your favorite cause.
(Since this is sponsored by Yahoo!, maybe it won't be deleted)
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