I made a post on Reddit asking for help with a TV, I had made up some (likley incorrect) technical assumptions about the issue. Several years later I asked the LLM about the TV, it used my own post as a citation to tell me what was wrong with it.
I am paranoid that this is happening every time I ask a LLM for a product recommendation or a shop recommendation. In the same way as SEO, anyone wanting to sell or convince needs to do as much as they can to influence the LLM.
This is becoming a problem real fast. I asked an LLM to find me some reasonable tank-fill inkjet printers with good ratings. It did some research and linked some Reddits as proof. The results looked fishy to me so I cross checked against prosumer review sites for printers and the models suggested were recognized as junk with very poor print quality. Not sure why the LLM rated random redditors higher than say printer SMEs. I feel like I dodged a bullet.