Reddit is facing a new version of an old internet problem: promotional content that tries to look like ordinary conversation. The difference now is that AI search has made a simple brand mention more valuable than it used to be.
As chatbots and AI-powered search results lean on Reddit, marketers have a stronger incentive to place brand-friendly comments in communities that users trust for candid advice. That creates a difficult job for moderators, who must separate genuine recommendations from covert promotion.
Why Reddit became so valuable to AI search
Reddit has long been useful to people looking for less polished, more personal answers online. Users began adding “reddit” to searches as a way to get around search results filled with search engine optimization content. Google then began surfacing Reddit more prominently.
AI search has pushed that importance further. According to data compiled for The Verge by Semrush, an SEO company owned by Adobe, Reddit was the most-cited domain in May by ChatGPT, Perplexity, Google’s Gemini, and AI Mode. The source article says Reddit outranked news publishers, scholarly article repositories, and Wikipedia in those citations.
That matters because AI responses are also moving into shopping research. Semrush found that, compared to a year ago, Google is placing AI Overviews more often into searches with commercial intent, including queries where shoppers are comparing products or researching brands.
For companies, the shift changes the value of attention. In older SEO, links were a clear target. In AI search, the source article says some SEO experts believe a backlink may not be required for a brand to show up in a chatbot answer. A mention alone can matter.
A skincare thread shows the new pattern
The source article opens with a case from a skincare-focused subreddit. Earlier this year, a Reddit user asked whether anyone had tried a specific hypochlorous acid spray, a product often used for acne. One account, Primary-Taro4254, replied that they had not used the named brand but had liked a similar product from Honeydew Labs.
The comment did more than share a casual opinion. It described the spray as helpful for redness and irritation and included product credentials: Honeydew Labs used a 0.02% hypochlorous acid concentration and was accepted by the National Eczema Association.
That one comment might have looked normal in isolation. But the account appeared to have made similar comments about the same Honeydew Labs product in other threads, including discussions about unrelated products and other skincare-related subreddits. A member of r/SkincareAddiction, which the source article describes as a popular subreddit with more than 1 million weekly visitors, warned others to be aware of Honeydew Labs hypochlorous acid and marketing bots.
A moderator then took action on Primary-Taro4254 and set Honeydew Labs posts to be automatically filtered for moderator review. Honeydew Labs did not respond to a request for comment, and Primary-Taro4254 did not respond to a Reddit message.
Why moderation is getting harder
For moderators, the challenge is not simply that spam exists. It is that suspicious content can now resemble normal participation. Maya Adivi, a moderator of r/SkincareAddiction, first joined the community as an active user and was drawn to its interest in the science behind beauty products.
The source article says the community was not limited to simple questions such as “What should I do for acne?” Users discussed studies and explained new research because they cared about the topic. In that kind of environment, a detailed comment can be useful, but it can also be a vehicle for promotion.
Older forms of suspicious promotion had clearer signs. Moderators could look for overly enthusiastic reviews, links with tracking tags, or before-and-after images that matched product listings. AI search has changed the incentives, because marketers may be trying to create the kinds of mentions that language models and AI search systems later surface.
The source article describes several formats that can be difficult to judge:
- Open-ended questions that sound like genuine community discussion.
- Threads that invite people to compare a specific brand or product.
- Comment waves that steer the discussion toward AI skincare apps or other products.
- Responses that sound lightly self-critical before turning positive about a product.
These posts can resemble the way someone might prompt an AI chatbot. That makes them useful not only for human readers but also for systems that summarize web discussions into answers.
The cost of covert promotion
r/SkincareAddiction prohibits brand-affiliated accounts from posting in the subreddit. Adivi and other moderators sometimes warn accounts that violate the rule, but the source article says they more often automatically ban brands and sock puppet accounts that break it.
A brand that secretly promotes itself can become persona non grata in the community. Adivi was recently alerted to a marketing agency that claimed it had targeted and “hijacked” r/SkincareAddiction to promote an unknown Korean beauty brand and rank on Google. She removed the Reddit thread the agency used and added the brand to the keyword filtering list.
The same strict approach applies to sanctioned Ask Me Anything-style threads. Moderators want those events to benefit the community, not act as a sales platform for a company.
The larger conflict is clear. Reddit is valuable because users see it as a place for unfiltered, authentic opinions. But that value is exactly what attracts marketers trying to influence AI answers. As AEO, or “answer engine optimization,” and GEO, or “generative engine optimization,” become part of the marketing conversation, Reddit communities are being treated as places to seed future chatbot responses.
That puts subreddit moderators at the front line of a broader shift in search. If AI tools keep citing Reddit heavily, then community rules, keyword filters, account bans, and moderator judgment will shape not only what appears on Reddit but also what may later appear in AI-generated answers.