I used to think for reasonably everyday items, not too expensive, that the number of real reviews and answers would overwhelm the number of fakes.
But I recently asked a question about an item that I have bought before (a small appliance that I have been forced to find to be more a consumable than a durable). I asked if the vendor had fixed the flaw that made me throw out three prior ones. Within minutes there were three answers, assuring me that there was in fact no such flaw. These items were great. Perfect!
Silly of me, I guess.