Literature

BookSpot.com is a free resource "that simplifies the search for the best book-related content on the Web" and directs users to where they can find audiobooks, free first chapters, and specific lists such as award winners and the top 150 bestsellers of the week. --Wikipedia

Fantastic Fiction maintains bibliographies for over 30,000 authors and is an easy way to track series by authors and authors who write under different pseudonyms. --Wikipedia

What's Next is a free resource from the Kent District Library System in Michigan that helps users in finding quality series fiction. "A series is two or more books linked by character(s), settings, or other common traits" --Wikipedia

LibraryThing is a social networking website for cataloging and sharing personal and institutional library collections. The site contains a "Suggester" feature which provides book recommendations based on user catalogs with similar books. The broader your catalog, the more specific suggestions you will receive. --Wikipedia

ALA Recommended Reading compiles different reading lists for all ages, especially children and teens. Most lists are available on the ALA web site. --Wikipedia

More than 130,000 book reviews for librarians, book groups, and book lovers—from the trusted experts at the American Library Association.

A good book does more than simply entertain - it leaves you mentally richer than when you started it. BookBrowse seeks out these gems from both established writers and first time authors - novels that whisk you to unfamiliar times and places, thrillers that are more than just 'page-turners', and thought-provoking non-fiction that entertains as it informs.

Fiction_L is an electronic mailing list devoted to reader's advisory topics such as book discussions, booktalks, collection development issues, booklists and bibliographies, and a wide variety of other topics of interest to librarians, book discussion leaders, and others with an interest in reader's advisory. Fiction_L was developed for and by librarians dealing with fiction collections and requests; however fiction lovers worldwide are welcome to join the discussion. Among the topics discussed have been: genre study, bibliographies, workshops, audiobooks, reading clubs, and print and electronic resources The discussion is not limited to fiction, but rather covers all aspects of reader's advisory for children, young adults and adults, including non-fiction materials.

Description from Web100.com
An extensive social database for book lovers, Goodreads allows users to discuss new book finds and discover recommendations through a network of fellow bookworms.

Description from Tech Radar
Enjoyed a particular book or writer and want to find something similar? This site will recommend a good follow-up read for you to get your teeth into. Its suggestions rely on the magic of user-generated content, and the site isn't in the pocket of any publishing houses, so you should get a fairly unbiased recommendation.