How to do blog commenting for SEO

Blog commenting as an SEO tactic has diminished significantly in value compared to 10-15 years ago, but it still has a legitimate place when done strategically. Search engines now treat most blog comments with nofollow links as non-passing authority, and they've gotten much better at identifying spammy commenting patterns. That said, thoughtful commenting on high-authority blogs in your niche can drive referral traffic, build relationships with other content creators, and occasionally earn you a dofollow link if the blog owner manually removes the nofollow tag for genuinely valuable contributions.

To execute this effectively, focus on blogs that actually matter to your clients' audiences—not just any site with an open comments section. Look for established blogs with consistent traffic, engaged comment sections, and relevance to your client's industry. Read the full article carefully, not just the headline, and write comments that add genuine value by sharing additional insights, asking thoughtful questions, or respectfully disagreeing with evidence. Your comment should be 2-3 sentences minimum and demonstrate you actually engaged with the content. Include your real name and relevant anchor text in the URL field if you're doing this for your own agency, but resist the urge to make the comment about self-promotion. Some moderators will notice authentic contributions and reach out about collaborations or link opportunities naturally.

The real SEO benefit comes from the relationship-building and potential for the blog owner to share your comment with their audience, which can drive traffic and lead to organic links elsewhere. If you're recommending this tactic to clients, frame it as a relationship-building and brand awareness activity rather than a direct link-building strategy. Set realistic expectations—they should expect most comments won't provide SEO value, but occasionally a blog owner or reader will notice good contributions and create opportunities. Keep comments to 5-10 high-quality blogs per month rather than spam-commenting everywhere. Track which blogs send actual referral traffic through Google Analytics so you can identify the sites worth returning to regularly. This approach respects the time investment required while maximizing the likelihood of meaningful outcomes beyond just link juice.