Swarming a Book Online; New York Times, 1/20/13

David Streitfeld, New York Times; Swarming a Book Online: "“Books used to die by being ignored, but now they can be killed — and perhaps unjustly killed,” said Trevor Pinch, a Cornell sociologist who has studied Amazon reviews. “In theory, a very good book could be killed by a group of people for malicious reasons.” ...Attack reviews are hard to police. It is difficult, if not impossible, to detect the difference between an authentic critical review and an author malevolently trying to bring down a colleague, or organized assaults by fans. Amazon’s extensive rules on reviewing offer little guidance on what is permissible in negative reviews and what is not."