Last month, author Anne Rice took on the amateur critics who had been trashing her latest novel on Amazon.com, calling their negative comments “libel.” It was an unusual if not unprecedented move, and other authors are making it clear that Rice crossed an invisible line with her rant. “I’d be more worried if I impressed a moron than if I made one unhappy. And on Amazon… it’s usually clear within a sentence or two which side of the intelligence fence the commentators fall on.”