From a former Apple genius... http://www.scripting.com/stories/2008/01/02/fromAFormerAppleGenius.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
From a former Apple genius... http://www.scripting.com/stories/2008/01/02/fromAFormerAppleGenius.html