Astroturfing on reddit has been a thing for over a decade and has really accelerated over the last few years. There's several companies where literally that is their business model to promote your product or service on reddit. I saw one for sale on acquire.com a while back for 7 figures
I'm seeing a much less sophisticated campaign for this on my city's subreddits recently... Someone will ask a weird or generic question, and either poster or the top comment is a throwaway account with a spiel about checking $site_name. It's exhausting, especially since people will write out real advice and corrections about how to deal with rats, bedbugs, neighborhoods, etc. and it all goes into the ether in hopes s…
I used to co-work next to a SEO specialist back in my freelance days and he would offer rankings, but the client would not be told that they were getting said rankings by blackhat SEO tactics (that mostly no longer work).
It's all so obvious and standardised that I have to imagine it is part of a toolkit or framework marketers are using without much thought.