Reddit moderators report surge in AI SEO spam tactics targeting subreddits

Reddit moderators are reporting a growing wave of AI SEO spam, where brands and marketers attempt to manipulate AI-powered search results by disguising promotional content as authentic user engagement. In one example, a user named Primary-Taro4254 repeatedly praised a product from Honeydew Labs across multiple skincare-related subreddits without disclosing their affiliation. The posts, which included detailed product comparisons and credentials, were later flagged by community members as suspicious. A moderator for r/SkincareAddiction, which has over 1 million weekly visitors, confirmed they had taken action by automatically filtering out Honeydew Labs posts for review.

The shift in tactics reflects how AI search systems now prioritize Reddit as a source of information. According to data compiled for The Verge by Semrush, an SEO company owned by Adobe, Reddit was the most-cited domain in May by AI tools including ChatGPT, Perplexity, and Google’s Gemini and AI Mode—surpassing news publishers, Wikipedia, and scholarly repositories. This prominence in AI-generated responses has made Reddit a prime target for marketers seeking to influence AI search outcomes.

Moderators describe new strategies used by brands and agencies to game AI search results. These include posting seemingly innocuous questions designed to elicit brand mentions, such as inquiries about skincare routines or product experiences. Responses may follow a self-deprecating format, subtly promoting a product without overt advertising. Years ago, moderators could rely on obvious red flags like glowing reviews or tracking tags in product links, but the rise of AI search has made these tactics less effective—and the stakes higher.

The trend underscores a broader challenge for online communities as AI reshapes how information is discovered and consumed. Reddit, once seen as a platform for unfiltered, authentic discussion, now faces pressure to adapt its moderation practices to counter attempts to exploit AI-driven search systems. The outcome could determine whether these communities remain trusted sources of information or become inundated with covert marketing disguised as genuine engagement.