[Note:  This post is the inaugural entry in “The Pulse,” a weekly feature that will explore trending topics, rankings and industry “bests” across a wide spectrum of communication disciplines.  We'll post a new "Pulse" each week through 2011 here at Channel M. ]

Lots of PR and digital agencies do a great job for their clients in helping them to establish a social media presence or build a loyal network of fans and brand advocates.  But fewer do a great job with their own social media presence.  Today’s social media-enabled agency knows it’s not enough to simply amass a large number of followers or broadcast promotional messages on their Facebook page — audience engagement is the currency of the social media landscape.  So who’s doing it right, which agencies are most connected to their communities, and why? 

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