Awesome guys, really nice and fast funding process (though if payment fails you are stuck with plain red message in blank page, you could improve on that one).
The advice I can give you - steal best parts from Kiva, they have great and successful site. One of the things I missed was "tip" donation along with the treatment donation.
We love Kiva, and we hope to implement a "tip" option very soon. We just need to head out into the real world and raise some cash from grants, philanthropists, whatever, so we can pay to build all the features we want!