I vaguely remember a system where you could register a paper book online, then leave it on a bus, bench or somewhere, the idea being that the book would be read and passed around.
A sticker inside the book directs the finder to the website where they can say where they found and subsequently left it.
I can't remember the name of this scheme. It sounds like a great alternative way of clearing out old paperbacks; charity shops seem to charge far too much for something which has been freely donated.
