I studied microfinance in grad school and believe it holds a lot of power. Without credit, I myself would not have been able to improve upon myself in areas such as schooling and everyone deserves the chance to develop themselves.
I recently took more flexible job that allows for volunteering. I volunteer with a microfinance pass-through organization called Women's Empowerment that funds loans in San Diego, Sonora Mexico, Ghana and Honduras. www.womenempowerment.org