While this isn’t a new problem for Amazon, the stakes are getting higher for those peddling fake Amazon product reviews (e.g. Facebook groups).
Rewind: There are groups and merchants who offer rewards in exchange for 5-star product reviews on Amazon (thus manipulating Amazon’s algorithms).
Not only would it cost your your product listing and/or removal of your merchant account on Amazon, now, it could potentially become illegal in the UK [via Stacked Marketer].