There's a lot of interesting graph theory there. Check out more about kidney matching here: http://blog.sciencenews.org/mathtrek/2007/08/kidney_matchmak...

If anyone is really interested in this kind of stuff, shoot me an email. I'm working on a couple research projects in this area.

Maybe I'm missing something but isn't that why we have money?

Looks awesome. Money is over rated. (literally)