What is BookCrossing? It's the World's Library. It's a smart social networking site. It's a celebration of literature and a place where books get new life. BookCrossing is the act of giving a book a unique identity so, as the book is passed from reader to reader, it can be tracked and connect its readers. There are currently 998,479 BookCrossers and 8,481,303 books travelling through 132 countries. Our community is changing the world and touching lives one book at a time. What's our mission? Very simply, we aim to connect people through books. How do we do it? Label. Share. Follow. Breath new life into books instead of letting your old favorites collect dust - pass them along to another reader. Our online archival and tracking system allows members to connect with other readers, journal and review literature and trade and follow their books as lives are changed through “reading and releasing”. Users are able to tag and track their individual books by marking them with BCIDs (BookCrossing Identity Numbers). Each BCID is unique to each book – once it’s registered on our site, the book can then be followed and journaled forever. BookCrossing is free to join and free to play. So don't be 'shelf'ish with your books - read and release!