Here is something new, which I think is interesting. Kiva has three loans posted now, all for young women (eldest is 25 years old) in Zambia, who have recently contracted to become part of a "mobile payments" network in that country. The network is called Mobile Transactions Zambia, or "MTZ." The Field Partner for these loans is not the traditional "MFI," but is the franchisor of the mobile payments network, I think. The borrowers will not pay a fixed interest rate for the loans, but instead will pay 25% of their money transfer business revenues for 36 months, after which any balance remaining on the loan will be due.
Here is the Field Partner page link:
http://www.kiva.org/partners/210.
And here is a link to the home page of the Field Partner, Mobile Transactions Zambia ("MTZ"):
http://www.mtzl.net/default.asp?id=33
