Gary Vaynerchuk, author of Crush It!, says that one of the best ways to build readership for your blog is by commenting on other people’s blogs.

For one thing, it helps with your Google search juice. But more importantly, it lets people know you’re reading their blog and are interested in what they’re saying. Vaynerchuk says that we need to spend hours per day — hours! — posting comments on other people’s blogs.

While you may not have the time or desire to spend hours doing this (of course, you won’t crush it, says Vaynerchuk), you do need to leave some intelligent comments when you do. It’s not enough to just leave “Nice post!” as a comment. If you want to show the bloggers you’re truly engaged and interested, leave comments that show you have actually read and understood what they wrote about.

This does two things for you: 1) you meet like-minded readers, and let them know about your existence. When they find you, they’ll become readers, and you’re growing your social media footprint; and, 2) it builds backlinks to your own blog, which boost your search engine ranking.

This is a tried-and-true technique for building search rankings, especially as Google is recognizing authority of websites by their backlinks. They figure if a lot of people link to a blog, site, or even a post, it must be something worthwhile. And commenting, while not as powerful as, say, another blog post, is still a way to generate those much-sought after backlinks.

There are some search engine optimization companies that offer backlinking services to their clients, and will spend a lot of time (hopefully) leaving comments on people’s blogs, in addition to their other techniques and practices.

Less scrupulous companies will leave crappy comments that are nothing but spam, hoping that they won’t be deleted or caught in spam filters. While I’m not sure if Google or other search engines will penalize URLs that spam links lead to (if anyone knows, leave us a comment), it’s our fervent hope that the search engines will penalize those parasites, and that they suffer TSA strip searches and tax audits.

(WordPress has a great spam fighting software in Akismet, and it’s done wonders for this blog. It’s blocked 11,484 spam comments to date, and I deleted 35 spam comments right before I wrote this post. So I’m not a big fan of spammers.)

Basically, if you want your comments to be accepted and appreciated by your fellow bloggers, explain why you think a post is comment-worthy, talk about your own viewpoints, and maybe a reason why you agree or disagree. Engage in an ongoing conversation with those people. And if someone leaves a comment on your blog, respond, and check out the other person’s blog.

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