You can also view it as a protest of a company's practice. People protest in front of brick-and-mortar establishments all the time to make consumers aware of th

You can also view it as a protest of a company's practice. People protest in front of brick-and-mortar establishments all the time to make consumers aware of things which may affect their decisions. I wouldn't call that "holding stores hostage." If a review has zero information, then I agree with you that it is absolutely worthless and should be removed. However, if a review clearly states why it is scored the way it is, then it doesn't matter if it is purely about the content of a book or not. I have seen plenty of reviews which indicated shoddy binding... would you say these are worthless as well?