Kiva has revolutionized person-to-person microfinance, creating connections between social investors and entrepreneurs all over the world. Kiva has chosen to focus on business loans only, but the idea of social investment is growing. Nick Cain, a former Kiva fellow, ended his Kiva Fellowship and went to work for Vittana.org, a site much like Kiva.org, but designed to bring student loans to college students in developing and emerging economies.
Here’s a video that sums up their work: http://www.youtube.com/watch?v=Myz8llpbpDU
Check it out!