Essentially you are a private lender giving small loans to 3rd world entrepreneurs. I'm intrigued in the sense that these are real people you affect and can really see the hardships they're facing. The current featured person requesting a loan wants money to buy fertilizer to produce a better yield on his crops so he can afford a car to become a cab driver, and eventually afford his children a better education.
The financial savvy side of me is intrigued in that this is a loan service. You eventually do get paid back, and perhaps with interest. I can't imagine these are very high grade loans or that interest is anything worth shaking a stick at.
Still, that makes it an interesting idea in that it's a donation with the possibility of getting more than you gave back. Win win on both sides.