I have been lending through Kiva for several years. They fund microfinance institutions around the globe. There is a little controversy as the loans you fund are actually already prefunded and you are just covering something they already chose to fund, but from a practical standpoint it makes sense that they do it that way. Here are some links:
http://www.kiva.org/home
http://en.wikipedia.org/wiki/Kiva_(organization)
http://www.charitynavigator.org/inde...8#.Uvz6oiKYa70