Another suggestion from a new fan
Collect "quality of life" statistics for entrepreneurs at time of loan, and again at 1 (and perhaps 3 or 5) years after repayment.
* Questions could reflect change in income, number of staff employed, increased ability to pay for children's education, improved health and nutrition of family, ability to improve housing conditions, etc
* In addition to the journals, lenders could quickly see the impact of their loan (and microfinance in general) on the entrepreneur
* The information could be collected by Kiva Fellows and field partners
* Data could be aggregated to show field partner and Kiva's impact on clients