Earlier quoted context omitted.
FakeSpot and ReviewMeta seem to do a decent job of identifying obviously fake Amazon reviews. I suspect that Amazon just have an incentives problem - purging their site of fake five-star reviews would go a long way to restoring trust in their platform, but it would negatively impact sales in the short-term. From what I've heard, Amazon has a very decentralised and data-driven management culture, which is antithetical…
How do you know what their FP rate is?
I would rather have less, but more accurate, reviews than have all of them but many of them being fake.
It seems like a use-case where a high false positive rate would be acceptable. Unlike say, medical diagnosis or something.