Hi everyone, this is Neo.

Today, something practical. We’ve talked a lot about Reddit dominating Google — your million-dollar website losing to an 18-month-old Reddit comment, and Reddit’s citation share crashing in ChatGPT. But this new data set has a different protagonist: Facebook Groups.

A fresh Ahrefs study shows public Facebook Groups are now the second most common source in Google’s “Discussions and forums” module, appearing in 38.3% of instances — second only to Reddit’s 87.8%. Yes, that Facebook — the one everyone likes to call outdated.

Where the data comes from

Glen Allsopp and data scientist Xibeijia Guan at Ahrefs analyzed 145 million US Google search results. The Discussions and forums module appeared in 16.93 million of them (11.7%) — so roughly one in ten US searches triggers this feature.

When the module shows up, here’s how often each domain appears:

Domain	Appearance rate	Notes
Reddit	87.8% (US) / 83.9% (global)	Average 1.29 links per appearance
Facebook	38.3%	All from public Groups
Quora	32%	~8.22M search results

The top three together account for 76.75% of all module results. Every other domain on the web fights over less than a quarter of the appearances. The concentration is brutal.

Facebook’s rise: from zero to #2 in just over a year

• Late 2024: Facebook’s presence on Ahrefs’ chart was zero.
• January 2026: Facebook overtook Quora for #2 and has held it since.
• Now: 38.3%, and the share is consistent across countries.

The details are fascinating:

• Every Facebook link Google shows comes from public Groups. You don’t even need a Facebook account to see those posts in Google results.
• Facebook doesn’t publish official group numbers; estimates range from 10M to 70M active groups.
• Concentration is low: the top 10 Groups account for only 2.82% of Facebook’s link placements, the top 100 for 9.27% — mid-size groups genuinely get surfaced.
• Fun detail: Google sometimes uses the AI-generated headline Meta adds to a group post as the link text in the module.
• Facebook is the #1 domain in 4 countries (South Africa, Zimbabwe, Zambia, Samoa) and #2 in 23 countries, including the US, UK, Canada, Australia, and Singapore.

Other findings worth your attention

Beyond Facebook, the study has several insights SEOs should bookmark:

1. Intent mix: 98.7% of module appearances come with informational intent, 40.9% commercial, and only 0.6% navigational. This feature almost never shows up for “ready to buy” searches — it’s a discovery-and-research surface.
2. Query length: the longer the query, the more likely the module appears — eight-word queries are roughly 3x more likely than average. Long-tail question queries are the battleground.
3. Backlinks barely matter: of the top 100 discussion URLs, only 6 had any URL Rating at all, and none above 5. Whether a specific discussion gets surfaced has essentially nothing to do with its link profile.
4. Domain authority correlates only moderately: overall ρ=0.38; the top 100 domains average DR 78, the bottom 100 average DR 48. High DR helps, but low-DR domains still make it in.
5. Single-URL dependence: 27 of the top 1,000 domains get 10%+ of their appearances from a single URL. One hospital’s health Q&A page accounted for 67% of that domain’s presence. One great discussion thread can carry a whole domain.
6. Old communities win: the top 100 subreddits average 16 years old. Building a forum from scratch to chase this module? Forget it.

What should independent site sellers actually do?

Ahrefs’ own advice is refreshingly practical: don’t build a group from zero — go participate in the groups Google is already surfacing.

Three steps:

Step 1: Find which groups Google already shows for your niche. Search your core keywords on Google and note which Facebook Groups (and subreddits) appear in the Discussions and forums module. Or use Ahrefs Keywords Explorer with the Discussions and forums SERP filter to list every group that shows for your keyword set.

Step 2: Participate genuinely — don’t advertise. Group rules are stricter than Reddit’s; hard self-promotion gets you removed fast. The right play: answer customer questions, share expertise, drop real data from your own testing. Remember — the questions your customers ask inside those groups are literally your content team’s keyword list, and those same posts surface in Google for your next customers to see.

Step 3: Treat groups as a market-intelligence channel. What do your competitors’ customers complain about? Which features do they ask for? What alternatives do they compare? That’s first-hand demand signal money can’t buy — and it’s indexed by Google.

Neo’s take

First, Google’s “real human content” pool is going multipolar. Reddit’s 87.8% share was always fragile — Google bet heavily on one platform it doesn’t control (remember the API pricing fiasco and Reddit’s citation collapse in ChatGPT). Facebook Groups are one of the largest existing pools of genuine human discussion Google can tap, and the 38.3% share suggests Google is actively diversifying the module. For sellers, that means more options — you’re no longer forced to play Reddit’s game.

Second, the core logic of this module is leverage. The data is unambiguous: your own site’s authority, backlinks, and domain age matter less than being discussed in a real community. Google is showing extreme favoritism toward authentic user voices. The strategy writes itself — show up where real discussions happen, add value, and become part of the conversation, instead of shouting from your own homepage.

Third, a reality check: don’t try to game it. Facebook Groups is growing fast, but Google’s crackdown on manufactured discussion is escalating too (the AI content labels for forums we covered earlier are one signal). Self-Q&A with an army of burner accounts might work short-term; it will get cleaned up eventually. Group admins aren’t fools either. Genuine participation, consistently, is the only durable play.

Fourth, a special note for sellers in China: Facebook Groups marketing is completely legitimate and viable — but avoid two traps. Don’t apply the “scale mindset” (hundreds of fake accounts flooding threads) to overseas communities, and make sure group content loops back to your own site: the value you post in groups should ultimately route to your website or landing pages, or you’re just doing free work for Facebook and Google.

Bottom line: Facebook Groups is a free traffic channel worth taking seriously for the second half of 2026. It needs no code and no ad budget — just real, professional, consistent participation. Which happens to be exactly what most Chinese sellers find hardest abroad. So start “lurking” in your industry’s groups today.