Amazon has repeatedly deleted my negative 1-star review of a Sedona-area guidebook that I returned for a refund, because it was an advertising-filled piece of junk, NOT a true guidebook by any definition. It's been deleted over and over, despite me re-posting it. Interestingly, there remain FIVE five-star, positively RAVING reviews of this piece of garbage, EACH ONE by an author that has only reviewed this book, and NEVER reviewed anything else on Amazon.com. I don't trust Amazon as far as I can spit! What a crooked organization. Anyone who thinks their review system is truly open and unbiased is horribly mistaken! They manipulate their review system to their liking, and they'll delete any review they damn well please if that's what they feel like doing. What a bunch of Nazis!