Admit it. You’ve been infected by the Madness, too. With 48 games in the rearview mirror and another 12 on the docket for next weekend’s Sweet 16 and Elite 8 rounds, the NCAA Tournament is in full swing. But the most activity isn’t happening on court in regional venues; it’s taking place virtually on Twitter. In that spirit, let’s break down the tournament’s massive social-media response thus far in fitting micro-form fashion: – The biggest story of the Dance so far has been