Tighten up that elevator pitch, mister

The collective human attention span is dead — gone, buried. These days you’ve got 140 characters, or thereabout, to present your elevator pitch to a stranger. So, have you tightened up your pitch? “Keep this in mind not only when you’re networking at in-person events, but also in the way you present yourself in everything from your Twitter profile to the ‘about us’ on your Web site,” Gini Dietrich wrote for the blog F.A.D.S. “The name of the game is to enco…