If people buy reviews to paint a picture of a good standing business, what would stop the competition from buying people to tarnish a competitors reputation to have an advantage in the business?
People are wiser now and they know the true to a fake one, those fake reviews can not stand here in Bitcontalk, they can do that on other platform but not here in Bitcointalk, reading reviews coming here in Bitcointalk are worth it because they are independent reviews and it's an open discussion to see the truthfulness of those reviews.