It wouldn't solve everything, but I think that the problem could be significantly helped with the following changes: Only allow reviews from people who actuall

It wouldn't solve everything, but I think that the problem could be significantly helped with the following changes: Only allow reviews from people who actually purchased the product. Make it fraud to pay spammers to review your product. Show the country where a seller is located. Make Amazon (and similar marketplaces) liable and on the hook for returns if a seller disappears.