Kiva is a non-profit that allows you to lend as little as $25 to a specific low-income entrepreneur in the developing world.

You choose who to lend to – whether a baker in Afghanistan, a goat herder in Uganda, a farmer in Peru, a restaurateur in Cambodia, or a tailor in Iraq – and as they repay their loan, you get your money back. It’s a powerful and sustainable way to empower someone right now to lift themselves out of poverty.

In my case, I chose 8 entrepreneurs from 6 different countries!

Moreover, you can share to whom you invest.

http://www.kiva.org/lender/chim

Last but not least, they have a great page explaing what microfinance is.

http://www.kiva.org/about/microfinance/

Viva microfinance!