Here's an engine that supposedly provides you with a recommendation for what book to read next. Problem is, if you enter only one book, you end up with some bizarro stuff. For example, I entered "Evelyn Waugh, Decline and Fall" and had suggested to me, "H. P. Lovecraft's Dagon and other Macabre Tales." Interesting associations. Of course, I'm guessing that they expect you to compile a list over time which will help the engine hone its recommendations. Anyway, it looks like something fun to go and enjoy.
