Online retail giant Amazon is suing over a thousand people it claims provide fake reviews on its website.
The claim, filed by the company on Friday, seeks to unmask 1,114 defendants using the name "John Doe" to conceal their real identities, and force them to pay damages for the "manipulation and deception" of Amazon customers.
The defendants offer their false review service for as little as $5 (£3.25) on website Fiverr.com promising 5-star product reviews.
Amazon said the fake reviews were tarnishing the brand's reputation. Earlier this year, the company sued a number of websites for offering similar fake review services.
The legal action says: "Amazon is bringing this action to protect its customers from this misconduct, by stopping defendants and uprooting the ecosystem in which they participate."
It added that the defendants acted in the knowledge that Amazon - which described itself as "Earth's most customer-centric company" and detailed how it pioneered the system of customer reviews 20 years ago - does not allow paid for or fictional reviews.