So demanding people to taking down their negative review really is against your contract with all your vendors. They are opinions. You can not control them as much as you tried to control them from the beginning. I bought the book. I get to write a verified review. I have the receipt. You will have to deal with that. I have no problem contacting each and every vendor telling them what you are doing with the evidence.
What will Mr. Bezos say now? He is already well aware of you.
Guide to Writing a Book Review
“A book review, on the other hand, is an in-depth analysis of the text; an examination of its contents. Its purpose is not to rehash the story, but to evaluate the value of it and recommend the book to the reader, or not. A book review gives the opinions of the writer and includes his personal views. A review will include an analysis of the author’s intent, thematic elements, and symbolism.”
Read more at: http://grammar.yourdictionary.com/style-and-usage/guide-to-writing-a-book-review.html#mH3gLilwJ4XfkCI9.99