Sci Tech Watch: Is Pinterest the New Social Media Echo Chamber?

Selected excerpt FROM: http://www.sci-tech-watch.com/2012/02/is-pinterest-new-social-media-echo.html

Every social media site under the sun has some way of allowing its users to easily share content with one another. So why are pins so interesting and why are online marketers, specifically, SEOs so giddy with excitement?

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Sci Tech Watch: Is Pinterest the New Social Media Echo Chamber?