Even if you don't follow fundraising trends, you may have heard of Kiva. Oprah and Bill Clinton are both big fans, and it's received a lot of media coverage of late. What is Kiva? Well, it's an exciting web service that allows individuals to make microloans (literally, small loans – as little as $25) to entrepreneurs in developing countries. Microfinance institutions screen individual entrepreneurs, and post profiles of qualified ones online . . .