Blog comment backlinks are a powerful SEO technique where you leave meaningful, relevant comments on blogs and include your website link. This not only helps drive referral traffic but also signals to search engines like Google that your website is connected to authoritative sources. However, it's crucial to avoid spammy comments, as search engines prioritize quality content. Focus on finding blogs related to your niche and leave valuable insights or feedback. When done correctly, blog commenting can boost organic traffic, improve your site’s visibility, and enhance your site’s domain authority for better search rankings.