The majority of the reviews reference nothing but the book.
That being said, if you read all the links, this is one dogpile I can totally get behind. This isn't a clueless writer, like the woman who reacted badly to the not-totally-positive review, but a person who has not only spammed communities for personal gain, but also freely admitted that he has sent the same spam to women whose assignations with he used in the book and thinks it's funny.
Have at it, Amazon reviewers. I actually hope those women sue the pants off him in addition to the bad reviews.