Do authors have any protection from an 'unfair' review? I just received my first review and it was highly damaging and negative accusing me of ripping off readers. The booklet cost 0.99 USD, contains 33 original graphics and no mistakes. The pamphlet was aimed at laymen but was reviewed by an expert who did not seem to have read the product description. Since his review all sales have stopped. His damaging comments tarnish all my other publications.
The only protection an author has against negative reviews is patience and a sense of humor. This too will pass. Other reviewers will show the bad review for what it is.
Today I got a review on number seven in a ten book series. The reviewer titled her review "Get a Proof Reader". She said it was a fun a read (her typo not mine). She complained of typos and grammar and gave me three stars. Mind you she gave me two stars on book six so this is an improvement. In two and a half sentences she had one typo and three questionable commas. I would bet she will buy and read book eight. I checked out her other reviews - she doesn't like anyone's grammar, finds typos in almost all books read, and admits to liking all but one of them. Laughter seems a better choice than crying or anger.
So many writers are begging for new ways to bring on reviews - I think it is best to be careful what you wish for. There is little one can do about a rotten review that does not cause more damage in some way, part of the risk when we put our ideas out to the public.