> #3 - If you haven't reviewed the product on Amazon, you should warn other users with a review

I've warned users of many such instances of false claims, and safety issues with products. As a consequence, I've been banned from reviewing, and all my past reviews have been removed.

"Community standards", I guess.

I've stopped trusting reviews altogether. They're to easily gamed - dishonest competition and clients posts fakes. Dishonest businesses dispute all negative reviews(and most disappointed customers don't have the time to fight it).

Reviews just don't work when the user pool goes below a certain "average honesty level"