November 9, 2026. Reddit is frequently discussed as an important source of information for AI search engines. But there is a considerable difference between appearing in an AI-generated answer, attracting a visit from Reddit, and converting that attention into a newsletter subscription. A new first-person account from AI product manager and Product with Attitude author Karo Zieminski offers a useful opportunity to examine those distinctions.
In “AI SEO: I Ran 6 Reddit Experiments Over 18 Months. Here's What Worked”, Zieminski describes testing different approaches to Reddit promotion and broader AI discoverability. The publicly shared material reports that six Reddit experiments were conducted over 18 months, that one approach brought 438 subscribers, and that the author's longer-term strategy shifted away from simply promoting links. However, the detailed results of all six experiments are reserved for paid subscribers. It would be misleading to reconstruct those missing experiments or claim to know which specific method produced the 438 subscribers.
The most interesting lesson is not that Reddit is a guaranteed AI citation engine. It is that audience acquisition, AI referral attribution and AI source citations are different measurements—and marketers need to stop treating them as interchangeable.
The reported results: AI-attributed subscribers increased from 51 to 192
Zieminski compared two rolling 60-day windows. In the earlier window, reported subscriptions attributed to AI platforms totaled 51: 35 from Perplexity and 16 from Claude. In the later window, reported subscriptions reached 192: 91 from Perplexity, 66 from Claude and 35 from ChatGPT.
| Attributed platform | Earlier 60-day window | Later 60-day window | Change |
|---|---|---|---|
| Perplexity | 35 | 91 | +56 (+160%) |
| Claude | 16 | 66 | +50 (+312.5%) |
| ChatGPT | 0 | 35 | +35 |
| Total | 51 | 192 | +141 (+276.5%) |
These figures are the author's reported attribution data, not an independently audited experiment. They also compare two rolling windows, rather than cumulative subscriber totals. Most importantly, the article does not establish that Reddit alone caused the increase. The author explicitly says Reddit was one part of a broader distribution strategy involving multiple platforms.
Without an isolated control group, source-level conversion data, stable tracking definitions and a complete breakdown of each experiment, the numbers demonstrate an observed increase in AI-attributed subscriptions—not a causal lift from Reddit posting.
What the public Reddit experiments actually reveal
The source identifies two of the six promotional approaches in the publicly accessible excerpt.
Experiment 1: Post an article hook and link to the full piece
The hypothesis was that a compelling introduction would encourage Reddit users to click through to the complete article. Zieminski reports that this failed: users challenged the promotional nature of the post instead of following the link.
This is a familiar community dynamic. Reddit discussions are shaped by subreddit rules, moderators and members who often reject content that feels like advertising. A strong headline does not compensate for a post that provides little value without leaving the platform.
Experiment 2: Publish a generic newsletter sign-up pitch
The second test used straightforward promotional posts asking users to subscribe. Zieminski describes the result as another failure.
The lesson is not that newsletter promotion is prohibited across Reddit. Rules vary by subreddit, and some communities explicitly permit relevant self-promotion. The lesson is that a generic sales pitch is unlikely to satisfy the informational intent of a discussion-oriented community.
What about experiments 3 through 6?
The supplied public excerpt does not disclose their methods, performance figures or which one produced 438 subscribers. Those details should not be invented. A useful analysis can still evaluate the reported outcomes and propose a reproducible testing framework, but any framework below is NetContentSEO's recommendation—not a reconstruction of the author's undisclosed tests.
Why Reddit remains relevant to AI search
The article cites Profound research examining 680 million AI citations across ChatGPT, Google AI Overviews and Perplexity during a period from August 2024 to June 2025. According to the author's summary, Reddit ranked among the top two cited domains in each of the systems studied. The source also references a separate dataset of 1.7 million unbranded prompts with relatively few Substack citations.
Those studies can help explain why marketers are interested in Reddit, but their findings are not universal ranking rules. Citation shares vary by AI product, query category, date, language, geographic market, prompt construction and the method used to count citations. A domain appearing frequently in one large study does not guarantee visibility for a specific subreddit, brand or article.
Reddit's commercial relationships with Google and OpenAI also matter. Google announced a Reddit partnership in 2024, and OpenAI announced a Reddit partnership that May. Such arrangements establish access and product relationships; they do not prove that a marketer can purchase or manufacture favorable AI recommendations by posting on Reddit.
Reddit's falling Google traffic does not mean its AI citations disappeared
The distinction between citations and clicks became particularly important after Reddit's third-quarter 2026 results. In its October 29 earnings release and accompanying shareholder commentary, Reddit reported declining search referral traffic. During October, search referrals fell by more than one million per week on average, with logged-out and web traffic most affected.
That is a significant change in the traffic flowing from search engines to Reddit. It does not directly measure how often AI systems cite Reddit, how often users read Reddit discussions inside AI answers, or whether a newsletter benefits from mentions on the platform.
Reddit also announced plans to test a more login-focused experience in selected markets outside the United States. Those experiments could eventually change how unauthenticated visitors and automated systems access some discussions. But the details and broader rollout remain uncertain; it is premature to claim that Reddit has become inaccessible to AI search.
There is no contradiction in Reddit losing Google search clicks while remaining visible as a source in some AI-generated answers. The two metrics describe different parts of the discovery process.
How to test whether Reddit contributes to AI visibility
Rather than assuming a citation study applies to every business, build a small, repeatable test around the questions your audience actually asks.
- Define the audience question. Select 10–20 realistic, non-branded prompts that potential customers or readers might ask. Include comparisons, troubleshooting questions, recommendations and purchase research where relevant.
- Record a baseline. Run the same prompt set in the AI products you want to evaluate. Capture the date, product, interface, region where known, response, cited URLs and whether your brand or content appears.
- Identify relevant communities. Find subreddits where those questions are discussed. Read their rules and recent posts before participating. Do not assume every community permits links or self-promotion.
- Contribute useful answers first. When appropriate, answer the actual question with concrete information, examples, limitations and evidence. Link to your own content only where the rules allow it and the link adds value.
- Track the referral path separately. Use tagged links where permitted, referral analytics, newsletter attribution and conversion events to measure traffic and subscriptions. Note that referrers can be absent or incomplete.
- Repeat the prompt audit. Check the same queries at defined intervals and record changes in citations and brand mentions. A new mention is an observation, not proof that one Reddit comment caused it.
- Evaluate quality, not just volume. Compare engaged visits, subscriptions, qualified leads and the accuracy of AI descriptions—not only post impressions or raw citation counts.
Keep a log of competing changes such as new articles, product launches, other social posts and external mentions. Without that context, attributing an AI visibility increase to Reddit alone becomes especially unreliable.
A practical Substack-to-Reddit citation test
For newsletter publishers, a controlled editorial workflow is more informative than posting promotional links across dozens of communities. Start with a useful article that answers a narrow question, then participate in a relevant Reddit discussion where you can contribute an independently valuable explanation. If linking is allowed, include the article only when it supplies evidence or depth that cannot reasonably fit in the comment.
Before participating, record whether the newsletter article or domain is already cited in AI responses to your target prompts. After publication and participation, check again on a consistent schedule. Track three outcomes independently: direct Reddit referrals, AI citations or mentions, and subscriptions attributed to AI platforms.
Do not interpret a citation appearing after a Reddit contribution as conclusive evidence of causation. The model or retrieval system may have encountered the original article through other channels, the prompt results may fluctuate naturally, and the same content may have been discovered independently.
What not to do: manufacture community signals
A Reddit strategy designed solely to plant brand names or links can easily become spam. Coordinated promotional posts, undisclosed affiliations, fake recommendations and attempts to manipulate community voting can damage trust and violate platform rules. They also create a weak foundation for AI visibility: a citation or mention is not useful if the underlying information is misleading.
The better objective is to become a genuinely helpful source on topics that matter to your audience. That means providing answers people can verify, correcting mistakes, disclosing relevant affiliations and respecting community norms. A brand that is discussed accurately by independent participants has a stronger information footprint than one that repeatedly inserts itself into conversations.
AI SEO checklist for newsletter publishers and brands
- Publish articles that answer specific questions completely, with clear definitions, examples, sources and dates.
- Make the author, publication, editorial scope and relevant expertise easy to identify.
- Use descriptive titles and accessible HTML so readers and retrieval systems can understand the content.
- Maintain consistent names and facts across the publication, author profiles and legitimate external mentions.
- Join only communities where you can make a meaningful contribution and comply with their rules.
- Measure AI referral traffic, AI citations, brand mentions and conversions as separate metrics.
- Audit citation quality: an incorrect or negative mention is not automatically a marketing success.
- Recheck results over time because AI answers and cited sources are variable.
Frequently asked questions
Does posting on Reddit improve ChatGPT or Perplexity citations?
It may increase the chances that useful information is discoverable in some contexts, but there is no reliable universal rule that a Reddit post produces an AI citation. Outcomes depend on content quality, relevance, retrieval behavior, access and the user's question.
Did the six Reddit experiments produce 438 subscribers?
The author reports that one of six approaches brought 438 subscribers. The supplied public excerpt does not identify that approach or provide its full methodology. The figure should not be attributed to a specific tactic without the complete source.
Did Reddit cause AI-attributed subscribers to rise from 51 to 192?
The data does not establish causation. Those figures compare two rolling 60-day windows and cover subscriptions attributed to AI platforms. The author says Reddit was only one part of a broader strategy.
Is Reddit AI SEO dead because search referrals declined?
No such conclusion follows from the reported data. Reddit's October decline concerns search referrals arriving at Reddit. Citation frequency in AI-generated answers is a separate measurement and can move differently.
Should publishers post links to every new article on Reddit?
No. Community rules and relevance should determine participation. A complete answer that is useful without a click is generally a better contribution than a promotional teaser that asks readers to leave Reddit.
How should a small publisher measure AI visibility?
Use a stable set of representative prompts, record cited sources and brand mentions, monitor attributable AI referrals and conversions, and repeat the audit over time. Treat the results as observational unless the test design supports stronger causal claims.
The takeaway: discoverability is not distribution at any cost
Zieminski's account is a useful reminder that AI visibility is not built by simply being present on every platform. The public results show two promotional approaches that failed, a broader set of experiments whose full details are not public, and substantial growth in subscriptions attributed to AI platforms over two comparison windows.
For SEO and GEO teams, the opportunity is to make content useful and verifiable wherever relevant questions are being discussed, while measuring each stage of discovery separately. Reddit can be part of that process, but it is not a shortcut to guaranteed citations or a substitute for editorial credibility.
The question is not how many Reddit links a brand can publish. It is whether its expertise becomes useful enough to be found, referenced and trusted when someone asks an AI system for an answer.
Sources
- Karo Zieminski, Product with Attitude — AI SEO: I Ran 6 Reddit Experiments Over 18 Months. Here's What Worked (source supplied; publicly excerpted figures and methods).
- Reddit Investor Relations — Third Quarter 2026 Results, October 29, 2026.
- Reuters — Reddit reports search traffic declines and plans sign-in tests, October 29, 2026.