Amazon has banned “incentivised reviews” after evidence suggested writers typically awarded almost half a star extra compared with reviews where the reviewer paid for the product themselves.
Incentivised reviews involved companies giving big discounts to reviewers on products, although the reviews were still meant to be impartial. Amazon operates its own incentivised reviews programme, Vine, which will continue… More at The Guardian.
Good news, but only half a star? I rarely see an incentivised review that isn’t 5 stars.