Based on the Book - More than 1,000 books, novels, short stories, and plays that have been released as feature-length films in the U.S., in English, since 1980. From Mid-Continent Public Library.
Blogging for a Good Book - A recommendation a day from the Williamsburg Regional Library.
New York Times Best Sellers
Overbooked - "A website for ravenous and omnivorous readers..."
whichbook - "A completely new way of choosing what to read."
Fantastic Fiction - What's next in the series you're reading? Find out here. There's so much more than series too! Author read-alikes, complete bibliographies for every author you can think of, upcoming releases, and so much more. If it's fiction, it's here. There's even some non-fiction!
What's Next - What's Next™: Books in Series Database of Kent District Library contains linked series fiction, pure and simple.
Young Adult Books in Series and Sequels - YA series only, from Bettendorf Public Library.
Looking for a place to share what you're reading with your friends? Need a place to keep track of what you've read or what you want to read? Need a recommendation? You might want to join a social networking site that's just for book lovers! All have similar functionality but different feels.
Goodreads - With more emphasis on the social, this is a great place to connect with your friends. Many authors keep their personal libraries on Goodreads and import their blog posts. Goodreads has also started to do more interviews with authors, book giveaways, etc.
LibraryThing - Includes lists of recommendations based on your favorite book, user recommendations, and handy tag clouds. Some authors keep their personal libraries on LT.
Shelfari - Owned by Amazon, Shelfari is connected to your Amazon account and can import your book purchases and more.