Catalogablog signale:

"A specification is being developed for distribution of books via a catalog, the OpenPub standard.

OpenPub is an initiative of Lexcycle, Adobe, the Internet Archive, and O'Reilly Media to create an Open Publication Distribution System (OPDS) enabling the widespread discovery, description, and access of book and other published material on the open web. OPDS utilizes existing or emergent open standards and conventions such as ATOM with a priority on simplicity and extensibility.

Libraries might have an interest in this. Why are none among the developers?"