Link Quality & Risk
Unnatural Links
Backlinks that appear to have been created specifically to manipulate rankings rather than occurring organically, which can trigger search engine penalties.
What Is Unnatural Links?
Unnatural links is a broad term for backlinks that show clear signs of being artificially created to influence search rankings, rather than accumulating through genuine editorial judgment, independent citation, or organic reader interest. This is closely related to, and often overlapping with, link schemes and spam, but describes the pattern from the perspective of how the resulting link profile actually looks rather than the specific tactic used to create it. Telltale signs search engines and auditors look for include: a sudden, sharp spike in backlinks with no corresponding event (like a viral piece of content or press coverage) that would explain it; an anchor text distribution heavily skewed toward exact-match keywords rather than the varied, natural mix a genuinely organic profile shows; links concentrated on low-quality, irrelevant, or clearly link-farm-style domains; and links appearing in locations (footers, sidebars, unrelated directory listings) inconsistent with genuine editorial placement. Sites with a significant concentration of unnatural links in their profile risk both algorithmic devaluation of those specific links and, in more serious cases, manual actions affecting the site's visibility more broadly.
Why Unnatural Links Matters for SEO
A pattern search engines actively detect
The combination of signals that mark a link profile as unnatural — spikes, anchor concentration, low-quality sourcing — is specifically what detection systems are built to identify.
Real risk regardless of intent
A site can end up with an unnatural-looking link profile through a bad SEO vendor's tactics, or even through third-party negative SEO, not only through deliberate manipulation by the site owner.
Undermines the entire premise of the ranking system
The concept exists because unnatural links attempt to substitute artificial manipulation for the genuine, organic endorsement backlinks are supposed to represent.
A Simple Example
An SEO audit reveals a site gained 400 new backlinks within a single week, nearly all using the identical exact-match anchor text and originating from a cluster of low-quality, unrelated blog network sites. This pattern — the spike, the anchor concentration, and the low-quality sourcing together — is a clear signature of unnatural link acquisition, regardless of whether the site owner arranged it directly or a third-party vendor did.
Best Practices
- Regularly audit link profile growth for sudden, unexplained spikes.
- Monitor anchor text distribution for unnatural concentration in exact-match phrasing.
- Vet any SEO vendor's link-building tactics carefully before engaging them.
- Use disavow tools where appropriate for links you didn't create and can't get removed, particularly in cases of suspected negative SEO.
Common Mistakes to Avoid
- Assuming a link profile is safe simply because the site owner didn't personally arrange the questionable links.
- Ignoring anchor text distribution when auditing overall link health.
- Failing to monitor for sudden, suspicious spikes in backlink acquisition.
- Delaying a disavow or cleanup effort once a genuinely unnatural pattern is identified.
Key Takeaways
- Unnatural links show clear signs of artificial creation to manipulate rankings.
- Sudden spikes, anchor text concentration, and low-quality sourcing are common tells.
- Risk exists even when a site owner didn't directly arrange the links (bad vendors, negative SEO).
- Regular profile audits help catch unnatural patterns before they trigger a penalty.