There are many public bookcases in Germany. The photo shows the one closest to my apartment. Anyone can place no more needed books in such a public bookcase or take books from it without obligation to return them.
These bookcases and having received a book by an Epicurean friend last year inspired the idea to set up a bookcase on http://www.epicureanfriends.com.
Preferably, there should be a page on http://www.epicureanfriends.com with the list of books. The format should not be like a forum page but a table which lists the books with author, title and username of the owner, with the option to add photos of the books and comments.
To minimize the need for administration, any member of http://www.epicureanfriends.com should be able to edit the list.
A member who would like to get a book from the list sends a private message to the owner to ask for the book and to write the address to where the book should be shipped. Then, the owner sends the book, pays the shipping fee and removes the book from the list, and the requestor gets it for free. It is up to the owner and the requestor to negotiate different terms.
Preferably, the content of books on the list should be philosophy, science, history, arts, self-help or non-trivial fiction, but there are no restrictions on the content except for spam and material which is restricted by law in some countries such as pornography, calls to commit a crime, Nazi propaganda.
An alternative way to implement the bookcase project could be that instead of one page with the table of all available books, each willing donor creates a list on the own profile page.
Please feel free to comment and suggest rules which should be added for the implementation.