Holy shit:
http://www.wired.com/wiredscience/2010/10/twitter-crystal-ball/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+wired%2Findex+%28Wired%3A+Index+3+%28Top+Stories+2%29%29&utm_content=Google+Feedfetcher (www.wired.com)
Researchers use Twitter to predict stock market trends three days in advance with +80% accuracy using archived tweets from 2008 and historical stock market data.
