Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Most of the reviews on here are from friends of the author

The book is OK, the photos, are OK, although they are mostly of "modified" penises, and the book is more like a bunch of essays/articles with photos stuck in between. Also, before buying the book, know that most of the positive reviews are from either friends/business associates or members of the author's website, so they are undoubtedly at least somewhat biased. It's not the worst book on the subject of body modification, but then again, there aren't really any that are all that good.