They change ratings and reviews sometimes too. Back in 2001 I was enjoying an ironic fandom of Vanilla Ice's Limp Bizkit imitations, and I distinctly remember that the AMG review of his album Bipolar, after ripping it to shreds of course, stated that "the sad thing is, Vanilla Ice is still better than most of the nu-metal bands on the radio today." You won't find that line if you read the review right now, however. They took it out, I guess because they thought it would wreck their credibility if they suggested anyone, even Puddle of Mudd or Trapt or Adema or Taproot, were worse than Rob Van Winkle. They also downgraded their St. Anger star rating.