What does Google say about SEO? /

Official statement

John Mueller said (again) on Twitter that for him (and therefore for Google), all links in "guest-blogging" posts (guest posts) should be "rel=nofollow" or "rel=sponsored". Whether these links were purchased or not...
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Official statement from (5 years ago)

What you need to understand

Google officially recommends treating all links present in guest posts with the rel="nofollow" or rel="sponsored" attributes. This directive applies even when these links have not been purchased and the guest post is of high quality.

This strict position is part of Google's effort to combat PageRank manipulation. For the search engine, guest blogging is historically associated with abusive link-building practices, where low-quality articles are published solely to obtain backlinks.

Concretely, Google considers that the guest author already benefits from advantages (exposure, authority, traffic) without the link needing to pass SEO juice. The official position makes no distinction between different types of editorial collaboration.

  • All links in guest posts should be nofollow/sponsored according to Google
  • This rule applies even for legitimate editorial contributions
  • The objective is to prevent guest blogging from serving solely for link building
  • Google wants to distinguish natural links from links resulting from arranged collaborations

SEO Expert opinion

In the reality of SEO practice, this recommendation is very rarely followed by practitioners. The majority of sites accepting guest posts do not systematically nofollow links, especially when the content is qualitative and relevant to their audience.

There is a significant gray area that this directive ignores: the difference between a spam guest post (mediocre article published solely for the link) and a genuine editorial collaboration where the invited expert brings real added value. In this second case, a dofollow link to relevant resources naturally enriches the content.

The essential nuance lies in intent and quality. A guest post written by a recognized expert, published on a relevant industry media outlet, with contextual links to useful resources, resembles contributory journalism more than manipulative link building.

Warning: Google can penalize obvious large-scale guest blogging schemes, especially if the content is standardized, of low quality, or if the same authors/sites appear repetitively on the same blog networks.

Practical impact and recommendations

Faced with this official statement, a pragmatic and nuanced approach is essential to reconcile real practices and compliance with Google's guidelines.

  • Prioritize absolute quality: only publish or accept guest posts with genuine editorial value
  • Diversify sources: avoid repetitive patterns of publications on the same sites
  • Contextualize links: ensure that each link provides complementary information useful to the reader
  • Use nofollow/sponsored for purely promotional links or author signatures
  • Keep dofollow for legitimate editorial links naturally integrated into the content
  • Avoid over-optimized anchors: favor natural formulations rather than exact keywords
  • Limit the number of links: 1 to 2 relevant links maximum per guest post
  • Document the editorial approach: be able to justify the added value of each collaboration
Strategic recommendation: Balancing guideline compliance and SEO effectiveness in guest blogging requires fine expertise and ongoing monitoring of acceptable practices. Building a coherent and secure guest content strategy demands an in-depth understanding of the quality signals that Google values. For companies looking to develop their visibility through editorial collaborations while minimizing risks, support from a specialized SEO agency provides personalized analysis of each opportunity and helps establish a compliant and high-performing long-term approach.
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