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goker

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SEO: This Link Is Unique. And That’s… a Problem?

June 25, I presented a paper about Accessible Hyperlinks and Search Engines at SIU 2025. I'll share three strange but real things we learned.

This is Part 1: The tale of the lonely hyperlink.


So I asked the question:

"Does accessibility in internal links affect how subpages rank on Google or Bing?"

To answer this, I scraped and tagged thousands of internal links from shopping sites, avoided search-term bias by using the "site:" operator, and matched each link to its SERP position. Then I extracted 11 accessibility-related features.

One of them was called:

is_unique – Is this internal link unique within the site?

Now here’s the kicker:

WCAG 2.4.4 and accessibility guidelines recommend using unique, descriptive link text — vague or repetitive links like “click here” can confuse screen readers or keyboard users.

We expected uniqueness to help.

But when I trained classifiers to predict SERP presence...

Links that were repeated across the site — not unique — tended to perform better.

Yep. The “unique” ones ranked worse.


Wait, what?

“But Goker, how could repeated links help SEO?”

Here’s a hunch:

Search engines may treat repeated links as internal endorsements.

If your homepage, nav, and product pages all link to a subpage, that page looks important.

If only one lonely link leads there… the bot might think: "Meh. Not a big deal."

So ironically, being everywhere might help you get found.


Data Snapshot:

Feature: is_unique

Ranked (avg): 0.18

Not Ranked (avg): 0.75

That’s a pretty wild drop. Repetition seems to amplify presence.

Almost like link-echoing your way into relevance.


📂 Resources


TL;DR

Accessibility says: Use one clear link.

SEO says: Louder, everywhere, and often.

What should a dev do?

Maybe both.

Design for people. Then… amplify for bots.


Next up: Contrast Ratios and the Surprising Limit of Being “Too Accessible”

Stay tuned.

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devops_fundamental profile image
DevOps Fundamental

Insightful and well-written as always!