Amazon has a extreme policy about any review that criticizes Amazon itself or that "offends" any of it's more profitable sellers. The will cancel a buyers ability to write reviews and delete all of the buyers reviews without warning or any recourse or possible appeal. Amazon has an extreme censorship policy and will cancel all of a customers reviews without any explanation of why they are doing it. Amazon has grown to a size that gives than absolute power and as we all know, absolute power always corrupts.