Feedback Padding (also known as Feedback Manipulation)

The fraudulent manipulation of customer reviews to enhance or diminish the apparent trustworthiness of a seller’s account in order to deceive consumers.

Anti-Manipulation Policy for Customer Reviews, Amazon, https://www.amazon.com/gp/help/customer/display.html?nodeId=201996120 (last visited Feb. 27, 2020). Feedback manipulation policy, Ebay, https://www.ebay.com/help/policies/feedback-policies/feedback-manipulation-policy?id=4231 (last visited Feb. 27, 2020).