Google: Inside Search

SEO Blog Link Networks, Dangerous

and a waste of time and money--

Why Search Engine Optimization Blog Link Networks Are so Dangerous - Business 2 Community: "First of all, Google looks at links from blog link networks as fake/unnatural links and Google will de-index (remove) any website that is caught using a blog back linking network from its listing. If that happens to your website, you will lose a lot of money because you will no longer get any free traffic from Google."

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