BookSeer's webapp answers the question "What should I read next?", using Amazon, LibraryThing, and the last book you read and enjoyed.
Joining the ranks of other book recommendation tools, like previously reviewed BookArmy, WhichBook, BookLamp, and What Should I Read Next?, BookSeer offers a simple interface and answer system.
With BookSeer you can plug in a book you enjoyed reading and it will return the top recommendations from book sources like Amazon.com and LibraryThing to suggest a list of books you might enjoy. Each book in the recommendation list is linked back to information from the source so you can dig down and read more about the books BookSeer is recommending.