Perhaps the fastest-growing way to act on these altruistic instincts is participating in microfinancing. You take a relatively small amount of money and, through an online marketplace of sorts, give or lend it to a specific person or project whose story moves you. (Not all microfinancing organizations are nonprofits, however, so be aware of the differences.)
This fall, Kiva, one of the leading organizations in a niche that includes others like DonorsChoose and the eBay-owned MicroPlace, came under fire in a blog post by a microfinance researcher named David Roodman. He took Kiva to task for inaccurate information on its Web site about how the loans, made to entrepreneurs in the developing world by its users, actually worked.
Read more here: Doing Good by Paying Forward