I like the idea, but I’m not sure exactly the best way to do it.
What does BookMooch use the points for? If I have to have points to get a book then I get penalized for not having a SCUBA book library because I don’t have books to lend, correct?
Ultimately though, my biggest concern would be for people like you. If you loan out an out of print, hard to find, book and it gets damaged, destroyed, or never returned are you ok losing that book forever?