With AI taking over the web search experience, marketers and scammers are eager to game the system. Moderators say people are flooding Reddit with fake posts designed to influence AI search results, creating skewed responses and disrupting the flow of conversation in specific subreddits.
Agencies now run “AI‑engine optimization” campaigns that aim to shape AI answers rather than just classic search rankings, as many people have switched to AI chatbots for solutions rather than traditional search. Through these campaigns, brands use automated accounts to promote products and services in Reddit discussions. AI systems then collect and summarize this information, as Reddit has become a source of information for AI answers from tools like ChatGPT and Google’s AI Overviews, which often quote or reference Reddit threads as evidence of what “people online” think.
In practice, one account may post a leading question about peptides, financial tools, or AI apps; then a cluster of related accounts replies with polished testimonials praising a single brand or vendor. Moderators from communities like r/biohackers say they’re closely monitoring new posts about peptides and hormone replacement therapies after finding coordinated promotion from companies selling those products, TechSpot reports. Some spam accounts even “warm up” first by establishing a posting history before engaging in incentivized commenting.
Reddit claims it does not allow misleading or spam content and is working on tools to detect such content. But moderators say there is an ongoing struggle between spammers and the communities that want to maintain reliable online spaces—especially in realms such as health or personal finance.

