When a buyer asks ChatGPT or Perplexity about your client, the answer is often shaped by forum threads rather than the brand's own website. Reddit appears in 83.9% of Google's discussions-and-forums results and ranks among the most-cited domains across the major AI answer engines. For a PR team, where a brand is being discussed has become an auditable input to how AI describes it.

Ask a PR team where an AI assistant forms its view of a client, and most will point at the client's own website. Reasonable guess. It is also, increasingly, the wrong one. The systems your client's buyers now ask about brands read the room first, and the room is a Reddit thread, a Facebook Group, a Quora answer, the places real people compare notes before they buy.

That shift matters for reputation work more than for anyone else. The question a board keeps asking, "do we come up in ChatGPT?", turns out to hinge on something a PR agency already understands better than an SEO does: where a brand is being talked about, and by whom. This piece maps what the forum data actually shows, why backlink strength does not decide who surfaces there, and how to turn community presence into something you can audit and report for clients.

The real question behind "do we come up in ChatGPT?"

Start with local demand, because it is no longer speculative. AU practitioner analysis reports that half of consumers now use AI search platforms such as ChatGPT, Claude, Perplexity and Gemini, that around 60% use them for purchasing decisions, and that prompt volume rose roughly 70% in the first half of the prior year. The same analysis frames the winning move plainly: the goal is to become the reference point other reputable sources defer to, not simply to chase a citation.

That reframes the reputation brief. If buyers are asking a model instead of scanning a results page, then whatever the model reads about your client is doing the work a press cutting used to do. And the stakes are local. AU coverage of Google's AI-search overhaul warns that even when a brand's own content shapes the answer, the customer relationship risks staying with Google rather than the underlying business, with comparison platforms, retail, marketplaces, SaaS discovery tools, directories and content-driven businesses named as the most exposed.

So the honest version of "do we come up in ChatGPT?" is really: what is AI reading about us, and from where? That is no longer a soft reputation question. It is an auditable input to whether a brand gets described and recommended at all, which is exactly how AI describes your brand becoming a measurable concern rather than a vibe. It also sits inside a broader move the search industry is already naming, the shift from counting links to earning the mentions that make a brand an entity AI systems trust, argued in Search Engine Land's look at link building in 2027 (Search Engine Land is owned by Semrush, worth noting when treating it as a neutral read on the trend).

Reddit owns the room, and the data is not subtle

Here is the part that should change how you brief a client. Ahrefs' large-scale study found that Reddit appears in 83.9% of Google's discussions-and-forums SERP feature worldwide (87.8% across all instances, with early-August data showing it rising toward 86.1%). Facebook, through public Groups, is the second most prominent domain in 23 countries including Australia and the UK, and appeared in 38.3% of the US version of the feature, with Quora also surfacing widely. Community platforms, in other words, own that slice of the results page.

Crucially, the feature concentrates on the queries clients actually care about. Almost all of the searches that trigger it carry informational intent, 40.9% carry commercial intent, and it is around three times more likely to appear on an eight-word query than on the average search. Those long, considered, buying-adjacent questions are precisely the ones a prospect asks before choosing a firm.

The forum SERP feature proves dominance inside Google. The load-bearing question for AI visibility is whether the answer engines pull from the same rooms, and the vendor research says they do. A Semrush study of 248,000 Reddit URLs across 217,000 prompts (refreshed October 2025) found Reddit links appearing in 13% of ChatGPT Search answers and 9% of Google AI Mode responses, and ranked Reddit the single most-cited domain on Perplexity at roughly 4% share, with question-and-answer threads alone accounting for more than half of all Reddit citations. Separate tracking from the GEO-analytics firm Profound, across some 680 million citations, puts Reddit's share of all citations at 1.8% on ChatGPT, 2.2% on Google AI Overviews and 6.6% on Perplexity, an outsized slice for a single domain. A separate Semrush analysis of about 150,000 AI citations across 5,000 keywords, reported by DesignRush, had Reddit as the most-cited source at 40.1% of citations, ahead of Wikipedia and YouTube. Treat these as directional: they come from analytics vendors measuring their own trackers, and the exact percentages move with methodology.

They move with the platforms, too, and any reportable version of this has to say so. Semrush tracking, via the GEO firm Promptwatch, showed Reddit's share of ChatGPT Search citations falling from around 3.8% to about 0.5% over a few weeks in August 2026 after an OpenAI web-search change, an 86% relative drop that Promptwatch itself called provisional and could not fully separate from a possible data-collection issue. Search Engine Journal, covering the same fall, noted the drop is not fully explained. The lesson is about volatility. A single retrieval change can swing a platform's reliance on a source overnight, which is the whole argument for treating community presence as a monitored input rather than a set-and-forget one. When you brief a client on this, watching how ChatGPT surfaces brand mentions is an ongoing measurement, not a one-off audit.

One AU caveat before you copy a US community map onto a local client. Reddit is a mainstream, sizeable platform here, sizeable enough that Australia added it, alongside Kick, to the world-first under-16 social media ban on the basis that its primary function enables online social interaction. The rooms your buyers sit in differ by audience and platform in Australia, so a local client's map might lean on Whirlpool or a niche subreddit where a US equivalent would not. Use those as illustrations to check, not as settled facts.

If you have spent years reporting domain authority to clients, this next finding is the useful one. In the forum feature, backlink strength barely predicts prominence. Ahrefs found Domain Rating correlates only weakly with visibility here (a Spearman coefficient of 0.38, driven mostly by the very top of the list), and that 768 of the top 1,000 domains owe at least 1% of their presence to a single URL. What surfaces a page is relevance and genuine presence in the right conversation, not the size of its link profile.

For a PR agency that is close to liberating. The lever is not a backlink budget you do not control. It is earned participation in the specific communities your client's buyers already read, which is craft you already run. This is the same ground as the wider move from being ranked to being recommended that AI search is forcing on every brand.

It is also becoming a governed, transparent question rather than a mysterious one, which helps when you are selling it upward. In the UK, the CMA has ordered Google to rank organic results using objective and non-discriminatory criteria, a requirement the regulator says expressly encompasses AI Overviews, with Google given six months to implement and following June 2026 actions requiring attribution and source links in AI Overviews plus a publisher opt-out. Presence and relevance, not brand heft, are what the system is being pushed to reward.

Turning community presence into a reportable input

Let's make this something you can put in a client report rather than a strategy deck. Community listening and engagement are already core PR craft. Extended, they become an AI share-of-voice input: where is the brand being discussed, in which specific rooms, and how does that map to the questions AI is answering about the category. That is a natural extension of the same discipline behind measuring AI visibility for a board, pointed at forums instead of owned pages.

The method is specific, and the source that mapped the SERP feature also mapped the move: identify the exact subreddits and forums that dominate a niche (Ahrefs points to its Keywords Explorer and Brand Radar for this), then participate authentically. The explicit warning is the same one PR ethics already imposes: never spam, and never launch a forum purely to manufacture visibility.

That authenticity line is a compliance line here, not just good manners. In Australia, the ACCC has named manipulative and false practices in digital markets a 2026-27 enforcement priority, with Chair Gina Cass-Gottlieb saying the regulator will prioritise manipulative and false practices in digital markets, including dark patterns that manipulate consumer behaviour. The baseline is already established: an earlier ACCC sweep found that of 118 influencers reviewed, 81% had made posts raising Australian Consumer Law concerns, with 37% of 137 businesses engaged in concerning review conduct. In the UK, under the Digital Markets, Competition and Consumers Act 2024, fake reviews and concealed incentivised reviews are automatically deemed unfair and illegal, with the CMA running five live investigations and an update expected September 2026. Astroturfing a subreddit is not a growth tactic under either regime. It is a liability, and the reportable, defensible version of this work is the one that keeps participation genuine and disclosed.

Done that way, community presence sits neatly alongside the earned-press motion PR already sells, the work of turning coverage into AI brand citations. One tracks where journalists write about the brand. The other tracks where its buyers do. Both now feed the same answer.

Key takeaways

  • Forums are a primary source AI answers read: Reddit appears in 83.9% of Google's discussions-and-forums feature and ranks among the most-cited domains across ChatGPT, AI Overviews and Perplexity in vendor tracking.
  • The feature concentrates on buying-adjacent questions (40.9% commercial intent, three times more likely on eight-word queries), so it maps to the exact moments a prospect is choosing.
  • Backlink strength barely predicts who surfaces here (Domain Rating correlates at just 0.38); presence and relevance in the right community do the work, which favours PR craft over link budgets.
  • Citation shares are volatile and vendor-measured (Reddit's ChatGPT share fell from ~3.8% to ~0.5% in weeks after a platform change), so treat community presence as a monitored input, not a one-off audit.
  • Participate authentically. ACCC (AU) and CMA (UK) enforcement against fake and concealed reviews makes astroturfing a legal risk, not a shortcut.

Frequently asked questions

Does AI actually pull answers from Reddit and forums?

Yes. Vendor analytics find Reddit among the most-cited domains across the major AI answer engines: a Semrush study of 248,000 Reddit URLs recorded Reddit links in 13% of ChatGPT Search answers and 9% of Google AI Mode responses, and Profound's tracking of around 680 million citations put Reddit's share at 1.8% on ChatGPT, 2.2% on AI Overviews and 6.6% on Perplexity. These are directional figures from analytics vendors, and they shift with platform changes.

What is Reddit SEO visibility for a PR agency?

It is the practice of understanding and earning presence in the specific communities, subreddits, Facebook Groups and forums, that AI systems and Google's discussions-and-forums feature read when answering questions about a brand's category. For a PR team it is an extension of community listening and reputation work, not a new technical SEO skill.

Is it safe for a brand to participate in Reddit and forums?

Only if participation is authentic and disclosed. Australia's ACCC has made manipulative digital-market practices a 2026-27 enforcement priority, and in the UK the Digital Markets, Competition and Consumers Act 2024 makes fake and concealed incentivised reviews automatically illegal. Astroturfing or planting undisclosed reviews carries real regulatory risk, so genuine, transparent engagement is the only defensible approach.

How do you measure community presence as AI share of voice?

Start by identifying which forums and subreddits dominate the client's niche (tools such as Ahrefs Keywords Explorer and Brand Radar help), then track where and how the brand is discussed in those rooms against the questions AI is answering about the category. Because citation shares move with platform changes, treat it as an ongoing monitored metric rather than a single audit.

About Amina

When a buyer asks an AI assistant about your field, the answer is only as good as what the model reads about you. Amina's AI-visibility service measures how often your firm is named across the major AI assistants, and where the conversation is happening, so you can close the gap and be the answer buyers get.

Amina
Editorial Team