How The Virginia Earthquake Spread On Twitter | visual data |

We've already seen that Twitter can be a useful predictor of stock market swings, a movie's box-office sales, and even outbreaks of swine flu. But the earthquake last week revealed yet another interesting possibility: Twitter activity managed to show how intense the earthquake actually was, up and down the East Coast. (I know, I know, all you want to talk about this morning is Hurricane Irene. Tough luck, brah. Good infographics take time to produce.)