@atulagarwal covered already (and updated yesterday) - http://attrition.org/errata/charlatan/ankit_fadia/fadia07.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
@atulagarwal covered already (and updated yesterday) - http://attrition.org/errata/charlatan/ankit_fadia/fadia07.html