Amazon contacted many of these users and the people targeted in the lawsuit were offering guaranteed 5 star reviews and/or to let the purchaser write the review

Amazon contacted many of these users and the people targeted in the lawsuit were offering guaranteed 5 star reviews and/or to let the purchaser write the review. Given that Amazon actually contacted many of these users, it may not be so hard to be successful with the lawsuit. Amazon is claiming breach of contract and violations of several Washington state laws (including the Consumer Protection Act). If you read the actual lawsuit, there are examples of things like: 1) a user who claims to have 100 different Amazon accounts and will guarantee whatever star rating is requested, and asks the purchaser to provide the product review 2) being willing to receive an empty envelope to create a fake shipping record for a "verified purchase" review. However, actually getting damages against the users is fairly unlikely, particularly since the users may not be US based.