For 20 years, SEO strategy revolved around one core concept: backlinks. Get other sites to link to you, and Google rewards you with rankings.
That playbook is breaking down. Not because backlinks don't matter for Google (they still do). But because the fastest-growing discovery channel—AI search—doesn't work on links at all.
LLMs don't follow hyperlinks. They follow mentions.
How AI Recommendations Actually Work
When ChatGPT recommends a CRM tool, it's not crawling the web and counting backlinks in real-time. It's drawing on patterns from its training data plus (in some cases) real-time search results.
What matters in that process:
- Frequency of mention: How often is this brand discussed in the training data?
- Context of mention: Is it mentioned positively? As an expert? As a recommendation?
- Source authority: Is it mentioned in credible contexts (expert discussions, authoritative publications)?
- Consistency: Does the brand appear in similar contexts across multiple sources?
Notice what's NOT on this list: anchor text, dofollow vs nofollow, link placement, or any other traditional link metric.
Kevin Indig's analysis in Growth Memo crystallized this shift: "In the world of LLMs, a mention on Reddit can be worth more than a backlink from a DR90 website."
The New Citation Hierarchy
Surfer SEO and Try Profound both published research in 2025 on which sources LLMs preferentially cite. The emerging hierarchy looks like this:
Tier 1: Community platforms
- Reddit (especially for Perplexity and increasingly Google AI Overviews)
- Stack Overflow / Stack Exchange (for technical topics)
- Quora (declining but still referenced)
Tier 2: Knowledge bases
- Wikipedia (especially for ChatGPT)
- Industry-specific wikis and knowledge bases
Tier 3: Expert content
- YouTube (especially for Google AI Overviews)
- Industry publications and blogs
- Podcast transcripts (a growing signal)
Tier 4: Company-owned content
- Your website (still matters, but less than you'd think)
- Your blog
- Your documentation
The inversion is striking. In SEO, your own website is the center of your strategy. In GEO, third-party mentions are more important than anything on your own domain.
Why Community Validation Beats Editorial Links
There's a logic to why LLMs weight community sources so heavily.
A backlink from Forbes might mean you paid for a sponsored post. A glowing review on G2 might be incentivized. A press release is literally paid content.
But when a random person on Reddit says "I switched from [Competitor] to [Your Brand] and it's been great because..." that's hard to fake at scale. It's a genuine signal of product quality and user satisfaction.
LLMs are trained on massive datasets where they learn to distinguish authentic recommendations from marketing. Community platforms, despite their noise, contain some of the most authentic product discussions on the internet.
How to Build Third-Party Mentions
This is where most brands struggle. You can't buy mentions like you can buy links. You have to earn them.
Strategy 1: Be genuinely useful on Reddit
Don't create a corporate Reddit account and start posting about your product. That gets downvoted into oblivion.
Instead: have team members (including founders) participate authentically in relevant subreddits. Answer questions. Share expertise. When someone asks for a recommendation and your product genuinely fits, mention it with context about why—and disclose your affiliation.
The best Reddit mentions come from real users, not from you. Focus on building a product worth talking about and creating moments that prompt organic discussion.
Strategy 2: Seed conversations in the right places
When you ship a new feature, launch a case study, or hit a milestone—share it where your community hangs out. Not as marketing, but as news or discussion starters.
A post like "We just analyzed 1M [industry] data points—here's what surprised us" generates way more authentic discussion than "Check out our new feature."
Strategy 3: Make your users your advocates
The most powerful third-party mentions come from satisfied users who recommend you unprompted. How do you encourage this?
- Build genuinely great products (there's no shortcut)
- Create moments of delight that people want to share
- Make it easy for users to share their success (provide data, templates, shareable results)
- Build community spaces where users help each other
Strategy 4: Contribute to knowledge bases
If you have domain expertise, contribute to Wikipedia articles in your field (following Wikipedia's guidelines). Create educational content on YouTube. Answer questions on Stack Exchange. Contribute to open-source projects.
These contributions build your brand's presence in the exact sources that LLMs preferentially cite.
Measuring Mention Momentum
Traditional SEO has clear metrics: backlinks, referring domains, domain authority. The mention economy needs new metrics:
- Mention frequency: How often is your brand mentioned across Reddit, forums, review sites, and publications?
- Mention sentiment: Are the mentions positive, negative, or neutral?
- Mention context: Are you mentioned as a recommendation, a comparison, or a complaint?
- Mention reach: Are the mentions in high-visibility threads/articles or buried in obscure corners?
Track these over time. The trend matters more than any single snapshot.
The Transition Is Already Happening
If you're still spending most of your off-site SEO budget on link building, it's time to reallocate. Links still matter for Google rankings. But mentions matter for the future of discovery.
The brands that started building their mention presence 12 months ago are now reaping the rewards in AI recommendations. The ones still focused purely on backlinks are wondering why their AI visibility isn't improving despite "good SEO."
The new backlinks are mentions. The new link building is community building. The sooner you make this shift, the bigger your advantage.
Originally published on GeoBuddy Blog.
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