Does Google really ignore links coming from penalized sites?

Why does Google filter links from penalized sites?

The official statement by Duy Nguyen confirms that Google applies strict filtering on links from sites considered spam. The objective is clear: prevent the manipulation of anchor signals that directly influence ranking.

Google's algorithms — notably SpamBrain — automatically detect low-quality sites. Manual actions complement this work. In both cases, outbound links from these sites lose all transmission value.

What's the difference between algorithmic penalty and manual action?

An algorithmic penalty results from an automated process: the site is identified as spam without human intervention. A manual action, on the other hand, means that a member of Google's team examined the site and confirmed it violated the guidelines.

In both scenarios, the result is identical: outbound links no longer count. Google severs the transmission chain to protect the integrity of its link graph.

How does Google maintain the quality of anchor signals?

Anchor signals — link text, context, source authority — remain central elements of ranking. By neutralizing links from spam sites, Google prevents malicious actors from manipulating these signals.

It's a defense mechanism. Without this filtering, anyone could create link farms and artificially influence positioning.

• Links from penalized sites (manually or algorithmically) transmit no value
• Anchor signals remain an important ranking factor, but only if they come from reliable sources
• SpamBrain and manual actions work in parallel to identify and neutralize problematic sites
• This official position confirms that seeking links from low-quality sites is pointless

Is this statement consistent with field observations?

Yes, and it's even reassuring. For years, SEO practitioners have observed that links from visibly spammed sites have no positive impact — or may even be ignored. This statement officially confirms what was already a practical reality.

But let's be honest: Google says nothing about the exact threshold that triggers this removal. Can a site be partially penalized? Are some links filtered and others not? [To verify] — the statement remains vague on these operational details.

What nuances should we consider?

First point: this rule only applies to sites identified as spam. A low-quality site that hasn't yet been detected can technically transmit value. It's a question of timing and detection.

Second point — and this is where it gets tricky: Google doesn't specify whether a link from a penalized site can actively harm the target site. The wording talks about "not trusting," not "penalizing in return." Subtle nuance, but important.

Finally, this statement says nothing about redirects or well-built PBNs. A network of private sites that hasn't yet been detected escapes this filtering. It's a game of cat and mouse.

Should you systematically disavow links from penalized sites?

In theory, no. If Google already ignores these links, disavowing them becomes redundant. But in practice, no one knows for certain which sites are already filtered by Google.

My advice: focus on obvious toxic links — over-optimized anchors, clearly spammed sites, link farms. For the rest, disavowal remains a safety measure, but not an absolute priority.

What should you do concretely to protect your link profile?

First step: regularly audit your backlink profile. Use tools like Ahrefs, Majestic or SEMrush to identify sites pointing to you. Spot suspect domains — low authority, unrelated thematic, over-optimized anchors.

Second step: check in Search Console if you've received manual actions. If so, address the problem at its source before requesting a reconsideration. Google won't lift the penalty as long as violations persist.

What mistakes should you absolutely avoid?

Don't seek to obtain links from low-quality directories, link farms or visibly spammed sites. Even if these links are ignored, they pollute your profile and can attract Google's attention.

Also avoid massive link exchanges with unrelated sites. Google detects these artificial schemes increasingly better, and it always ends up backfiring.

Finally, don't rely solely on disavowal. It's a last resort tool, not a miracle solution. Better to prevent than cure by building a natural link profile from the start.

How do you verify that your site itself isn't penalized?

Check the Manual Actions section in Search Console. If no notification appears, you don't have an active manual action. For algorithmic penalties, it's more complicated: monitor sudden drops in organic traffic after major updates.

Also use tools like SEMrush Sensor or Sistrix to cross-reference data. If your traffic drops while your competitors remain stable, there may be an underlying problem.

• Audit your backlink profile at least every quarter
• Monitor Search Console to detect manual actions
• Avoid low-quality directories and link farms
• Don't over-optimize your link anchors — vary them naturally
• Use the disavow file only for truly toxic cases
• If you notice a traffic drop post-update, analyze your site's quality signals