The other night, when I was standing in line for a comedy show, the guy behind me glanced up from staring at his phone and said, "So many people these days are making a living off of social media." "Oh? Is that right?" I played dumb, hoping he would elaborate. Social Media Guy continued to explain the "possibilities" for financial success on SnapChat, Vine, and YouTube. "Hmmm. Very interesting," I replied. Since I was off the clock,...