What does Google say about SEO? /
Quick SEO Quiz

Test your SEO knowledge in 5 questions

Less than a minute. Find out how much you really know about Google search.

🕒 ~1 min 🎯 5 questions

Official statement

It is not the affiliate links themselves that may lead to a lower ranking, but often the overall low quality level of affiliate sites. A high-quality affiliate site can still be well-ranked.
33:34
🎥 Source video

Extracted from a Google Search Central video

⏱ 54:51 💬 EN 📅 19/02/2019 ✂ 22 statements
Watch on YouTube (33:34) →
Other statements from this video 21
  1. 1:37 Les en-têtes X-Robots-Tag bloquent-ils vraiment le suivi des redirections par Google ?
  2. 1:37 L'en-tête X-Robots-Tag peut-il bloquer Googlebot sur une redirection 301 ?
  3. 2:16 Le blocage de Googlebot par certains FAI fait-il vraiment chuter votre référencement ?
  4. 2:16 Le blocage par les FAI mobiles peut-il vraiment tuer votre référencement ?
  5. 5:21 Pourquoi votre positionnement chute-t-il après la levée d'une action manuelle Google ?
  6. 5:26 Une pénalité manuelle levée efface-t-elle vraiment toute trace négative sur vos classements ?
  7. 7:32 Pourquoi les migrations techniques compliquent-elles autant le référencement de votre site ?
  8. 8:36 Faut-il vraiment éviter de cumuler migration de domaine et refonte technique ?
  9. 11:37 Faut-il vraiment optimiser Lighthouse si les utilisateurs trouvent votre site rapide ?
  10. 11:47 Le Time to Interactive est-il vraiment un facteur de classement Google ?
  11. 13:32 Googlebot précharge-t-il les liens internes comme un navigateur moderne ?
  12. 13:48 Googlebot charge-t-il vraiment votre site comme un utilisateur anonyme à chaque visite ?
  13. 14:55 Combien de temps dure vraiment une migration de site aux yeux de Google ?
  14. 14:55 Combien de temps faut-il vraiment pour récupérer après un transfert de domaine ?
  15. 17:39 Les paramètres UTM peuvent-ils saborder votre indexation Google ?
  16. 18:07 Les paramètres UTM peuvent-ils polluer votre indexation Google ?
  17. 24:50 Google peut-il ignorer votre rel=canonical et indexer une autre version de votre page ?
  18. 26:32 Faut-il vraiment créer un site par pays pour son SEO international ?
  19. 39:54 L'UX améliore-t-elle vraiment le classement SEO ou Google contourne-t-il la question ?
  20. 44:14 Faut-il désavouer des liens pour améliorer son classement Google ?
  21. 53:03 L'API de Search Console rame-t-elle vraiment, ou est-ce un problème côté utilisateur ?
📅
Official statement from (7 years ago)
TL;DR

Google states that it is not the presence of affiliate links that penalizes a site, but rather the often mediocre overall quality level of affiliate sites. An affiliate site that meets quality standards can maintain a good ranking. The key lies in the ability to produce valuable content around the promoted products, rather than removing affiliate links.

What you need to understand

What’s the distinction between affiliate links and overall quality?

Mueller's statement makes a crucial distinction between two often-confused concepts. The affiliate link itself — this tracked URL with a partner ID — is not a negative signal for Google.

The issue lies with the degraded editorial model that is massively observed on affiliate sites: generic content copied from product listings, lack of unique user experience, pages stuffed with outbound links that provide no real added value.

How does Google define a high-quality affiliate site?

Google does not provide an exhaustive checklist, but the E-E-A-T criteria fully apply. A quality affiliate site demonstrates real expertise in the covered niche, offers in-depth testing, and reasoned comparisons with transparent methodology.

The difference between a penalized site and a well-ranked site often comes down to the depth of editorial treatment. A generic comparison of 300 words with 15 affiliate buttons will not make the cut — a 2000-word guide with video tests, original comparison tables, and authentic user experiences stands a better chance.

Is this position new from Google?

Not really. Google has always maintained a similar stance regarding low-value affiliates. What is evolving is the algorithm's ability to finely distinguish between sites that copy-paste Amazon descriptions and those that provide original analysis.

The Helpful Content updates specifically targeted these hollow editorial models. Mueller's reminder fits into this continuity: the issue is not the business model, but the shoddy editorial execution it often results in.

  • Affiliate links are not inherently penalizing for Google rankings
  • The real issue lies in the overall editorial quality of the site
  • The E-E-A-T criteria fully apply to affiliate sites
  • Google targets sites with low added value, not the economic model itself
  • Original, in-depth content based on experience is still rewarded even with affiliate links

SEO Expert opinion

Is this statement consistent with real-world observations?

Yes and no. In principle, it's verifiable: some affiliate sites indeed maintain good positions on competitive queries. Wirecutter (New York Times) is a perfect example — a pure affiliate model that dominates competitive SERPs thanks to impeccable editorial approach.

But in practice, the majority of affiliate sites have observed a gradual decline since the Helpful Content updates. The correlation between a massive presence of affiliate links and degradation in ranking is statistically observable, even if Google insists it is not a direct causation. [To be verified]: how far can Google truly isolate editorial quality from the affiliate model in its algorithmic analysis?

What are the gray areas in this position?

Google does not specify quantitative thresholds. How many affiliate links per page? What content/link ratio is acceptable? These parameters remain vague, leaving practitioners uncertain.

Another blind spot: the very definition of a "high-quality affiliate site" remains subjective. The Quality Rater guidelines provide hints, but the algorithmic application of these concepts remains opaque. A site may tick all the E-E-A-T boxes but still get downgraded if the density of affiliate links is interpreted as a signal of commercial intent outweighing user utility.

When does this rule not really apply?

The pure monetization verticals — promo codes, deals — are structurally at odds with this position. It's hard to produce "high quality" in the sense Google understands, since the added value is temporal (promotional alerts) rather than editorial.

These sites often survive through branded or direct traffic, not through traditional organic search. Google tolerates their existence but does not showcase them on informational queries. It's a form of tacit segmentation: deal affiliate sites do not play in the same SEO league as in-depth review sites.

Warning: Do not take this statement as a green light to stuff your pages with affiliate links under the pretense of producing "quality content." The algorithmic reality is stricter than the official rhetoric. Test cautiously and monitor your Core Web Vitals — a slow site overloaded with affiliate scripts will be penalized, editorial quality or not.

Practical impact and recommendations

What should you prioritize auditing on an existing affiliate site?

Start with a honest editorial diagnosis. Take your 20 most important pages: does the content provide a unique perspective, or does it rehash what’s available everywhere else? Have you tested the products or are you copying the merchants' descriptions?

Next, analyze the signal-to-noise ratio: how many informative paragraphs vs. how many affiliate links? If a 500-word page contains 12 CTA buttons, the problem is structural. Aim for a balance where content overwhelmingly dominates promotion.

How can you reposition an affiliate site for more quality?

Reduce the number of products covered and deep dive into each treatment. It's better to have 30 comprehensive guides of 2500 words each with real tests than 300 product sheets of 400 words copied and pasted. Depth trumps breadth in Google’s current equation.

Incorporate tangible experience evidence: original product photos, unboxing videos, comparative measurement tables. Anything that proves you have actually handled what you recommend. Google can detect fake tests through cross-signals (EXIF metadata, writing patterns, etc.).

What critical mistakes should you absolutely avoid?

Do not attempt to mask affiliate links through internal redirects or cloaking. Google easily detects them, and it's a much stronger negative signal than the simple presence of acknowledged affiliate links. Use rel="sponsored" or rel="nofollow" consistently.

Avoid also volume-based cannibalization: creating 50 pages on minor variations of the same product ("best red X", "best blue X") dilutes perceived quality. Google interprets this as a semantic spam strategy, even if each page is technically unique.

  • Audit the main 20-30 pages to identify generic content that needs enrichment
  • Establish a minimal ratio of 10:1 between informative content and affiliate links
  • Create tangible experience evidence (original photos, videos, measurable tests)
  • Apply rel="sponsored" systematically to all affiliate links
  • Reduce the number of products covered and deepen each editorial treatment
  • Monitor Core Web Vitals, especially the impact of third-party affiliate scripts
Optimizing an affiliate site to meet Google’s quality standards often requires a deep editorial overhaul: reducing the catalog, enriching existing content, producing tangible expertise evidence. These transformations demand a clear strategic vision and precise technical execution. If your site generates significant revenue, partnering with an SEO agency specialized in content sites can secure this transition by avoiding costly mistakes and prioritizing high ROI actions.

❓ Frequently Asked Questions

Faut-il retirer tous les liens affiliés d'un site pénalisé par une Core Update ?
Non, ce n'est pas la solution. Concentrez-vous sur l'amélioration de la qualité éditoriale globale : enrichir les contenus, ajouter de l'expérience utilisateur authentique, réduire les pages à faible valeur ajoutée. Les liens affiliés peuvent rester si le contenu autour justifie leur présence.
Quel ratio contenu/liens affiliés est considéré comme acceptable ?
Google ne communique pas de seuil précis. En pratique, visez au minimum 10:1 — pour chaque lien affilié, au moins 10 lignes de contenu informatif original. Plus le ratio penche vers le contenu, mieux c'est.
Les attributs rel='sponsored' protègent-ils d'une sanction manuelle ?
Ils démontrent la transparence et respectent les guidelines, ce qui réduit le risque d'action manuelle. Mais ils ne compensent pas un contenu de faible qualité — un site peut être bien balisé et quand même déclassé algorithmiquement.
Un site 100% affilié peut-il vraiment bien se classer en 2025 ?
Oui, si l'approche éditoriale est irréprochable. Des sites comme Wirecutter le prouvent. Mais le niveau d'exigence est désormais extrêmement élevé : tests approfondis, méthodologie transparente, expertise démontrée, mise à jour régulière.
Google peut-il détecter si j'ai réellement testé un produit ?
Indirectement, oui. Via les métadonnées EXIF des photos, la cohérence des descriptions techniques, les patterns linguistiques. Un contenu basé sur l'expérience réelle présente des signaux de qualité que Google sait identifier via ses modèles de compréhension sémantique.
🏷 Related Topics
Content AI & SEO Links & Backlinks

🎥 From the same video 21

Other SEO insights extracted from this same Google Search Central video · duration 54 min · published on 19/02/2019

🎥 Watch the full video on YouTube →

Related statements

💬 Comments (0)

Be the first to comment.

2000 characters remaining
🔔

Get real-time analysis of the latest Google SEO declarations

Be the first to know every time a new official Google statement drops — with full expert analysis.

No spam. Unsubscribe in one click.