I bought an 4.7 rated amplifier on Amazon that broke the first day. Looking at the reviews closer, I noticed they were 100% paid reviewers.
When I tried to leave a negative review, Amazon stopped me, giving a generic message about fake reviews on this product. This product is still out their with a high rating and no way for actual purchasers like me to warn other customers.
It's some ML/AI thing that analyzes the review content.
I honestly have no idea how accurate it is either, but I guess if it gives a strong ranking back you'd probably be best to take that into consideration.
Tried to leave a big detailed helpful negative review and it gets flagged for being suspicious, with no copy of the review attached so I have to write it all again. And then it gets removed again.
I just looked in my emails. The exact phrasing was "We have reviewed our decisions and concluded that the product you received is authentic. As a result, we removed your review specific to this product. This ensures other customers see reviews that reflect the current shopping experience."
Most recently it happened with a body trimmer, where I never questioned the inauthenticity, and then a zojirushi travel mug that I genuinely believe was a fake, and attached a lot of evidence.
They've blocked my review on a shower chair that was absolutely not rated for what they said. I nearly fell on my butt and my skinnier partner said it was too wobbly. They've blocked the negative review 5 times saying I questioned the authenticity of the product and they have confirmed it. I knew it was Medline brand. I've had to file a FTC complaint which I expect to be worthless.