One of the longest-running debates in SEO is whether links placed in blog comments help improve search rankings.
Years ago, blog commenting was a popular link-building tactic. SEO practitioners would leave comments on blogs across the web, often including a link back to their own website in the hope of passing PageRank and improving rankings.
In 2026, the answer is much clearer than it was in the past.
For the vast majority of websites, blog comment links provide little or no direct SEO benefit and should not be considered a viable link-building strategy.
Types of Links and Their SEO Value
| Link Type | Typical SEO Value | Google's View |
|---|---|---|
| Editorial link within content | High | Natural recommendation |
| Earned citation from an authoritative website | High | Strong trust signal |
| Relevant business partnership link | Moderate to High | Usually acceptable |
| Forum profile link | Low | Limited ranking value |
| Blog comment link | Very Low | Often ignored or treated as user-generated content |
| Paid link passing PageRank | Negative | Against Google's guidelines |
| Automated comment spam | None | Considered search spam |
Google's ranking systems are designed to reward links that represent genuine recommendations rather than links that anyone can create themselves.
Why Blog Comment Links Lost Their Value
The problem is simple.
If anybody can create a link, then the link is not a particularly strong signal of authority.
Search engines realised many years ago that blog comments were being abused by spammers posting generic comments such as:
"Great article! Thanks for sharing."
followed by a link to their website.
As a result, most modern blogging platforms automatically apply attributes such as:
rel="nofollow"
or
rel="ugc"
to links posted in comments.
These attributes tell search engines that the link should not be treated in the same way as a natural editorial recommendation.
What Do Nofollow and UGC Mean?
Google introduced the ugc (User Generated Content) attribute to help identify links created by users rather than site owners.
Common Link Attributes
| Attribute | Purpose |
|---|---|
| dofollow (default) | Allows search engines to follow and evaluate the link normally. |
| nofollow | Suggests that ranking signals should not be passed through the link. |
| ugc | Indicates user-generated content such as comments and forum posts. |
| sponsored | Indicates paid, affiliate or sponsored links. |
Since 2019, Google has treated these attributes as hints rather than strict directives, but comment links still carry significantly less weight than editorial links.
Can Blog Comments Still Help SEO?
Indirectly, yes.
While blog comment links are unlikely to improve rankings directly, meaningful participation in industry discussions can still provide benefits.
These include:
- Increased brand visibility
- Referral traffic
- Industry networking
- Relationship building
- Demonstrating expertise
- Generating awareness among potential customers
A thoughtful contribution to a relevant discussion may still generate business opportunities, even if it passes little or no PageRank.
The Difference Between Marketing and Spam
The key distinction is intent.
Helpful Participation vs Comment Spam
| Helpful Participation | Comment Spam |
|---|---|
| Adds value to the discussion | Exists only to create a link |
| Answers questions | Uses generic comments |
| Demonstrates expertise | Repeats the same message everywhere |
| Relevant to the article topic | Often unrelated to the topic |
| Benefits readers | Benefits only the poster |
If the primary reason for leaving a comment is to obtain a backlink, it is unlikely to be a productive SEO strategy in 2026.
What Works Better Today?
Most successful SEO campaigns focus on earning links rather than building them manually.
Strategies that continue to work include:
- Publishing original research
- Creating useful resources
- Producing expert content
- Digital PR campaigns
- Industry partnerships
- Thought leadership
- Earning mentions from relevant websites
These approaches generate links because people genuinely find the content useful, which aligns with Google's goal of rewarding helpful information.
Google's Focus on Authority and Trust
Modern search systems place far greater emphasis on authority, expertise and trustworthiness than they did a decade ago.
A single editorial mention from a respected industry publication is typically worth far more than hundreds of blog comment links.
This is one reason why businesses should focus on becoming a recognised authority within their industry rather than chasing easy backlink opportunities.
Final Thoughts
The days when blog commenting could significantly improve search rankings are largely over.
Most comment links are tagged as nofollow or UGC, and Google's algorithms have become highly effective at identifying links that exist solely for SEO purposes.
That does not mean commenting on blogs is a waste of time. Participating in industry discussions can still increase visibility, build relationships and drive referral traffic.
However, if your goal is to improve rankings, creating valuable content and earning genuine editorial links remains a far more effective long-term strategy.
In 2026, blog commenting should be viewed as a networking and engagement activity, not a link-building tactic.