Tweets stream below March Madness Live online in something called the Coke Zero Social Arena. Apparently, all you need to get into the Coke Zero Social Arena is a hashtag. You can't be profane, but that's about the only rule. So Josh Levin, on this week's excerpt from Slate's Hang Up and Listen podcast, tries a few tweets of his own, and picks out the highlights from the two previous rounds.

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