I have to turn off the extension occasionally because it makes search results disappear in Amazon (observed on Amazon business).

I like the "This seller is approved" for third-party sellers on Amazon that have a high percentage of positive reviews.

I also like the, "Seller location does not match item location" warning, as well as the warning when there's a recent spike in negative reviews.

I'm skeptical of the Fakespot letter grade for reviews, however, when fly-by-night companies with names that look like they were made by mashing randomly on the keyboard are marked as A or B grade, while name-brand products that I've used for years and know are good are marked D or F with "there is high deception involved".