[orangecat]

stuffing review sites with non-good-faith-reviews it harmless, even though it contravenes the expectation that a reviewer represents a single entity who has actually attempted to consume the book

I don't agree the the reviews are not "in good faith". It is wrong to write a review of a $100 Monster cable pointing out that no matter how well it works, it's a ripoff when a $10 cable is functionally identical? This is the same idea: the reviewers are expressing their opinion about whether the product is worth the asking price. Their criteria for evaluation is different from yours; that doesn't make it vandalism or coercion or a DDOS.

[tptacek]

Yes, I think it is: if you have not purchased the product, the proper venue to point out the TRUE FACT that the cable is a rip off is not in fact the product review site. Unless you buy the product and review it.