“The Pandora for Books” – Booklamp - is now up and running. Check it out. The idea: type in an author or book you love and it will identify others that you may like. The first three authors I typed in (Lev Grossman, Neil Gaiman, Eleanor Henderson) were not found. It finally returned results for Michael Chabon, but only for books like his Gentlemen on the Road. The service seems beta at best at the moment. Your mileage may vary.
John Hodgman talks about how bookstores can survive on The Daily Show:
Lev Grossman’s 10 “must read” fantasy novels
Literature inspired sneakers: be a rebel and sport your Slaughter-House Five kicks in homeroom