We’ve known for many years now that Google prioritizes branded websites when it comes to selecting what to show in its SERPs.The search engine’s goal is to provide users with the most effective possible results and there’s no doubt that some users like the “known quantity” of a brand web site than the potential risk of an unknown competitor.
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http://ontechdigital.com/targeting-branded-vs-seo-keywords-which-should-you-focus-on/