Goodreads

Goodreads is an American social cataloging website operated by Goodreads, Inc., a subsidiary of Amazon. Users can search its database of books, annotations, quotes, and reviews and expand the database by registering books to generate library catalogs and reading lists. They can also create their own groups of book suggestions, surveys, polls, blogs, and discussions. The website's offices are located in San Francisco.

Goodreads was founded in December 2006 and launched in January 2007 by Otis Chandler and Elizabeth Khuri Chandler.

From Wikipedia