Consumerist: “After buying an anti-snoring mouthpiece from a third-party seller on Amazon, reader Bob received an email from the company offering him a free mouthpiece in exchange for a five-star review. He noted this attempted bribe in his Amazon review, and Amazon deleted it. Twice.”
That’s bad behavior, of the manufacturer and of Amazon. Consumerist has more examples of this sort of thing at the link.
Reviews and ratings are one of my favorite Amazon features, but like everyone else I’ve learned to look on them with a wrinkled brow. If a product on Amazon has dozens or hundreds of reviews I trust the ratings. When there are just one or two reviews I figure I’m getting played about half of the time.