What a genius idea. Microlending via the internet: "Kiva.org allows individuals to make $25 loans to low-income entrepreneurs in the developing world (microfinance). By doing so, individuals like you provide affordable working capital for the poor (money to buy a sewing machine, livestock, etc.), empowering them to earn their way out of poverty."
You have to visit their site to see how powerful it is. You can read stories and decide who to lend $25 to. kiva link
Nearly all loans get repaid. You are basically foregoing a bit of interest to help people build businesses with dignity.
The New York Times did a nice video piece on them. NYT link
YouTube apparently donate 40m page impressions a month of free advertising to them.
This definitely strikes me as a contender for the best idea on the internet since... actually maybe ever.
Declaration of interest: I have a mutual contact who is trying to hook me up with them ie I'm so interested in them I'd like to help them somehow. Maybe just writing about it, I cant see any way of actually improving the thing or marketing it better than it markets itself. :J