Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Online general-interest book databases are bibliographic databases intended primarily for general rather than academic use, and are often constructed in a way resembling social networking sites. Some of the most important ones are discussed below.The Internet Book Database (IBookDB) is an online database with information about books and authors with an added social networking component. It was started as an effort to be the IMDb equivalent for books. It currently contains information on over 300,000 books (over 910,000 ISBNs), 92,000 authors and 4,000 series making it one of the largest online databases of author and book information. Unique features include finding historical publication information for books using their ''Other Versions'' feature on every book page. They also provide price comparisons, news from various news sites, new release information, bestsellers from Amazon and Barnes and Noble. You can browse books in English, French or German[2] (the site is still in English).