Data for Google organic traffic for his blog clearly shows it has been steadily declining (image below).
Organic traffic for seroundtable.com post Panda 4.1 update
Up until now, having more comments are thought to be positive from SEO perspective since they will provide additional content to the site and increase ranking for more keywords.
Barry speculated that one potential reasons might be the lack of content on his blog posts to start with since his writing style is to get straight to the point (big fan of that Barry!)
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