Book Recommender Systems

Resources in this category:

All Consuming
http://www.allconsuming.net/

All Consuming lets you build an online catalog of your favorite books, movies, music, and more; share your opinions about these books, films, songs, and other media; than get suggestions from others as to what you should "read, watch, or eat" next.

Gnod
http://www.gnod.net/

Find new authors, music, movies, or people that you like based on authors, music, movies, or people that you know you like. For example, enter a name into the Gnooks (books) page and watch a constellation of similar writers be generated with the author you entered at the center. The more similar an author is to the name you entered, the closer they appear to the center of the constellation.

LibraryThing BookSuggester
http://www.librarything.com/about

LibraryThing allows people to register for free and catalog their books using simple tags. The BookSuggester lets visitors enter a book they like and find similar books based on how others have tagged these books.

The Reader's Robot - A Reader's Advisory Service
http://www.tnrdlib.bc.ca/rr.html

Employs a version of famous librarian Nancy Pearl's "Appeals" and "Subjects" characteristics in its reader's advisory system. Readers can read and submit reviews of books with short (one-two sentence) descriptions of the plot and assigned "Categories", a mix of genre terms and other phrases to describe a book.