[Victorine]

They're not accusing you of anything. Even so, they can say what they think about the book without it being inappropriate.

Here is what Amazon labels as inappropriate:

Inappropriate content:
• Crucial plot elements (unless you offer a clear "spoiler alert")
• Other people's material (this includes excessive quoting)
• Phone numbers, postal mailing addresses, and URLs external to Amazon.com
• Details about availability or alternate ordering/shipping
• Videos with watermarks
• Comments on other reviews visible on the page (because page visibility is subject to change without notice)
• Foreign language content (unless there is a clear connection to the product)