Its influence is simply too large to ignore; it's even given us a new set of measurements for our PR reporting: impressions, engagement rate, reach, likes, comments... the list goes on forever! The number of users are in the billions, and span every corner of the world. Social media has become one of the fastest growing industries in history. While it has affected every industry under the sun in some way, it has had a huge—and arguably more pointed—impact on the public relati