TL;DR

• External blogs are 40.6% of every AI citation we recorded in week 01 — 12,840 of 31,658 across Google AIO, Naver AIB, and ChatGPT — content the brand neither owns nor controls.
• External blogs are the #1 cited source type in all 10 industries we track. No category is the exception this week.
• "Official brand site" — the destination most marketing budgets are designed to feed — never leads. It comes in second in only two industries: credit cards (28.6%) and non-life insurance (17.7%).
• If 40% of AI citations sit on domains you don't own, the cheapest unit of AI visibility a Korean enterprise can buy is a high-quality third-party blog post about itself.

Most enterprise marketers we talk to know that AI rarely sends users to their homepage. Almost none of them know what AI cites in its place.

Across 10 industries, 5,000+ prompts, and 31,658 individual citations captured in our first full tracking week, the answer is more concentrated than we expected. 40% of every citation is a third-party blog post — content the brand does not own, written by someone else, on a platform the brand does not control. The brand's own homepage leads as the top citation type in zero of the 10 industries we track.

This is the editorial finding of Issue 01. It is also a strategic problem most CMOs are not yet treating as one.

How AI is sourcing its answers

Every week, we run a fixed set of consumer-style prompts through the three AI surfaces Korean consumers actually encounter — Google AI Overviews (AIO), Naver AI Briefing (AIB), and ChatGPT — questions a real customer might ask before a high-consideration purchase. For each response, we record not only which brand was mentioned, but which URL the AI surfaced as a source, and what type of site that URL belongs to.

One classification note worth flagging up front: in the credit-card vertical, third-party comparison aggregators like Banksalad and Card Gorilla are classified as "Official brand site" for the comparison brand itself, not as third-party blogs. That choice lifts the "Official" share inside cards, but does not change the overall pattern below.

The 31,658 citations from week 01 break down like this:

"External blog" is not a metaphor. It is the literal category — third parties writing about the brand on their own publishing platforms. The bucket is dominated by Korean-language blogging platforms (Naver Blog, Tistory, Brunch, Naver Premium Contents) plus thousands of independently run blogs that publish reviews, comparisons, and explainer posts. None of this is content the brand owns, controls, or directly authors.

The corollary is the part most marketing teams have not yet internalized: across all 10 industries combined, AI cites third-party blog content roughly three times more often than it cites every brand's own corporate website put together.

What wins in each industry

The pattern is durable. External blogs are the #1 cited source type in all 10 industries we track. There is no exception this week — every category answers the same way.

Two observations from the table.

First, the consistency. When a single source type wins by ~30 to 45 points in ten separate verticals, that is not a quirk of the prompt set or the time window. It is a structural fact of how Google AIO, Naver AIB, and ChatGPT retrieve and weight Korean-language web content.

Second, the absence. "Official brand site" — the category most marketing budgets are designed to feed — does not lead in any industry. It comes in second in only two: credit cards (28.6%) and non-life insurance (17.7%). Everywhere else it is third or fourth.

What this means for AI visibility budgets

Most enterprise GEO and AI visibility strategy we see is still designed as if the AI would link to the brand's homepage. The first-week data says the opposite is closer to true. Three implications.

Third-party Korean blog content is no longer optional. A 40% citation share for the external-blog category means the cheapest unit of AI visibility a Korean enterprise brand can buy is a high-quality blog post about itself, written by someone other than the brand. Paid placements, blogger relationships, and creator partnerships across Korean blogging platforms are not "PR adjacencies" — they are the largest known input to how AI describes you.

News and YouTube are the second tier, and they are not interchangeable. News is a strong #2 in finance verticals (securities 22.8%, life insurance 19.4%, automotive 17.3%). YouTube is competitive in appliances (14.3%) and pharmaceuticals (17.9%) — categories where demonstration and visual proof carry weight. The right second-tier investment depends on the category.

Your own homepage is a publisher, not a destination. When AI does cite a brand's own domain, it is almost always cited as one source among five — and usually below the third-party blog post that summarizes it. The implication for owned content: it must be structured to be quoted, not visited. Schema, anchor headlines, and pull-quote-friendly summaries do more for AI visibility than another hero video.

What we'll publish each week

Starting next Monday, AI Visibility Weekly leads with one mover — the brand whose mention or citation rate shifted most week-over-week — and the analyst's read on why. The newsletter is the digest; the blog is the analysis. Both are free, both ship every Monday, and both run alongside the public Index so you can find your own brand at any time.

For Issue 01, the question to take into the week is straightforward. What does your AI visibility budget look like if 40% of citations are not on a domain you own?

FAQ

What does AI cite most when answering questions about Korean enterprise brands?

External blogs — third-party content on platforms the brand does not own. They account for 40.6% (12,840 of 31,658) of all citations across Google AIO, Naver AIB, and ChatGPT in our week 01 data, more than 2.5× the next category.

Does AI ever cite a brand's own homepage?

Yes, but rarely. Official brand sites receive 14.0% of citations overall and never lead in any of the 10 industries we track. They come in second in only two — credit cards (28.6%) and non-life insurance (17.7%).

Which industries are most dependent on external-blog citations?

Non-Life Insurance (45.5%), Securities (45.4%), and Automotive (44.4%) lean the hardest. Even the lowest-share industries — Women's Fashion Malls (30.1%) and Pharmaceuticals (33.4%) — still cite external blogs more than any other source type.

What counts as an "external blog" in this data?

Third parties writing about the brand on their own publishing platforms — predominantly Korean-language blogging platforms like Naver Blog, Tistory, Brunch, and Naver Premium Contents, plus thousands of independently operated blogs. Content the brand neither owns, controls, nor directly authors.

Which AI surfaces does AI Visibility Weekly track?

Three: Google AI Overviews (AIO), Naver AI Briefing (AIB), and ChatGPT. A fixed set of consumer-style prompts runs through all three every week, and we classify each surfaced URL by both domain type and content type.

How often is this report updated?

Every Monday. AI Visibility Weekly covers 10 Korean enterprise industries — roughly 5,000+ prompts and tens of thousands of citations per week. Week 01 covers 31,658 citations.

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Find your brand → bubbleshare.io/resource/enterprise-index

Want to track your own prompts, internally? AI Visibility Weekly is built on the same engine we offer to enterprises as VIVI — private, configurable, scoped to your competitors and your category. Talk to us.

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