The first online library is an enormous chain letter of books. “After choosing a book, each reader sends a stamped addressed envelope to whoever owns the volume. The owner posts the book and the reader is allowed to keep it for up to five weeks before passing it on to the next person in the chain. After beginning its journey from reader to reader, each book is destined to remain in circulation indefinitely. Anyone failing to keep the chain in motion will have membership frozen, although there are no plans to introduce library fines.”