Makes me think of a single sign up in Parramatta near the McDonalds that's along the lines of "Quit smoking today! Our system works after only one session! ChatGPT's #1 recommendation!"
Always makes me think the scammer just knows his LLM SEO.
"We show that a tiny snippet—just 13 words—of retrieved text on a UGC website like Reddit, Wikipedia, Quora, or Facebook can change AI agents to output spam / scam content pretty consistently."