>>54789281Paid user reviews and comments are a thing, but I'm not sure any of those marketing agencies touch 4chan, the one I had access to did Amazon, Facebook/Instagram, and Reddit.
They're also all very third party, like third worlders being paid $3 an hour by a company being hired by another company that's hired by the actual company pushing the product. It's not like they have internal shilling departments, they just do contract work through a network of marketing companies.