> Aren't many (maybe most) of these fake reviews done through Amazon Mechanical Turk? It's like instead of taking the cost to moderate the reviews, they decided to monetize them. Why pay money, when you can earn it?

I know a lot of them come though Facebook. There hundreds of groups (like this one https://www.facebook.com/groups/amznlove/), where sellers are soliciting fake reviews in exchange for free product and PayPal refunds and commissions.

Here's the Washington Post article that describes this practice: https://www.washingtonpost.com/business/economy/how-merchant...

Here's a page that came up after a quick Google search that appears to be a review solication howto: https://www.amzfinder.com/blog/top-100-facebook-groups-list-...