Blog comment backlinks were once a popular off-page SEO tactic. Understanding their current value — and how to use them properly — helps you allocate your SEO effort wisely.
What Are Comment Backlinks? Comment backlinks are links created by leaving a comment on someone else’s blog or forum post and including a link back to your website. In the early days of SEO, this was a common tactic for building backlinks quickly.
Do Comment Backlinks Still Work for SEO? The honest answer: in most cases, very limited value.
Here’s why:
- Most blog comment sections use the rel=”nofollow” attribute on links, which tells Google not to pass link equity through them
- Google has significantly devalued nofollow comment links over the years
- Mass comment spamming is a violation of Google’s spam policies
- Low-quality, off-topic comments can actually generate a negative signal
When Comment Links Have Value
There are situations where commenting can provide some benefit:
- Genuine, on-topic comments on highly relevant industry blogs — even nofollow links on reputable sites provide some referral traffic and brand visibility
- Forum participation in niche-specific communities builds topical authority and can drive qualified traffic
- Dofollow comment sections — some blogs still use dofollow links in comments, which do pass link equity (though these are increasingly rare)
The Right Way to Use Blog Comments for SEO
If you’re going to leave comments:
- Only comment on websites genuinely relevant to your niche
- Write substantive, valuable comments that add to the discussion
- Never use exact-match anchor text for your link — use your name or brand
- Avoid comment sections that are clearly spam-heavy
- Focus on building a genuine relationship with the blog owner — this can eventually lead to guest post opportunities (far more valuable)
Better Off-Page SEO Alternatives
Your time is better spent on off-page tactics with stronger ROI:
| Tactic | Link Quality | Difficulty | Value |
|---|---|---|---|
| Guest posting | High | Medium | Very High |
| Digital PR | Very High | High | Excellent |
| Resource link building | High | Medium | High |
| Broken link building | High | Medium | High |
| Comment links | Low | Low | Low |
Summary
Comment backlinks should not be a primary off-page SEO strategy in 2025. They provide minimal SEO value in most cases and can harm your site’s reputation if done spammy. Focus your link building efforts on earning high-quality editorial backlinks through guest posting, original content, and digital PR.
Related Reading
- Google Penalty Recovery Guide 2025: Identify, Fix & Recover Rankings
- Why SEO Is Important for Your Business in 2025
- How to Increase Your Website’s Visibility with SEO in 2025
- Is Link Building Still Effective for SEO in 2025?
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