Yes, I've witnessed that myself. On the flip side, those fake reviews: 1. Are usually hilariously easy to spot. 2. Beget more angry reviews with 1 star rating

Yes, I've witnessed that myself. On the flip side, those fake reviews: 1. Are usually hilariously easy to spot. 2. Beget more angry reviews with 1 star rating in attempt to neutralize their effect. Hence, I'd read them pretty carefully to look for patterns.