Beverly Macy Previews Social Super Bowl 48 - the NFL Social Command Center; the Super Bowl commercials; the 2nd screen experience, and more.To recap, here's what we saw in 2013's Super Bowl:24.1 million tweets generated around the Super BowlCalvin Klein captured the leading spot for advertisers with 28% share of voiceRay Lewis was crowned Social MVP with a total of 180,771 tweetsJohn Harbaugh was the winner of the "HarBowl," topping his brother Jim with 44% positive sentimentBeyonce generated 5.5 million tweets on her halftime show alone