If you don't have a lot of money but are interested in doing something you might want to check out Kiva (http://www.kiva.org).

They give micro loans to small businesses in countries around the world. You, over the course of months, get your money back and you can then redistribute it back to another person somewhere else.

I've been a member for nearly four years now and in that time I've managed to help with 14 loans.