Using tweets to predict the future: http://www.newscientist.com/article/mg20627655.800-blogs-and-tweets-could-predict-the-future.html
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Using tweets to predict the future: http://www.newscientist.com/article/mg20627655.800-blogs-and-tweets-could-predict-the-future.html