How Social Media and User Data Play a Role in Search Results and Rankings
***Correlation Between Social Signals and Google Rankings***
***What Is the Value of Social Signals?***
***Bing’s Experiments with Social Signals***
***User Engagement as a Measure of Search Quality***
the art of seo(chapter eight)
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转载自www.cnblogs.com/hqqq/p/9071586.html
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