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DCL
Yup, you heard us right. No-cost donation Web sites allow you to give to your favorite environmental cause-whether it's defending harp seals or protecting the Amazonian rainforest-without spending a single cent. All it takes is a single click of a mouse, thanks to the sponsors who pay for the placement of ads on those sites.
The mother of these click-to-give sites would have to be CharityUSA, which includes The Rainforest Site and EcologyFund.com. Care2 is no slouch when it comes to charitable giving, either. Its Click2Donate site boasts over 10 different donation-generating click-throughs. Meanwhile, you can save the rainforest or feed the chimpanzees at Red Jellyfish for nada on your end. You can also convert your clicks to solar power for underdeveloped countries at The Solar Site, or go for broke by saving Greenland-all without leaving your seat.
Difficulty level: Easy
