Privacy-related changes coming to Firefox for CSS :visited http://hacks.mozilla.org/2010/03/privacy-related-changes-coming-to-css-vistited/
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
Privacy-related changes coming to Firefox for CSS :visited http://hacks.mozilla.org/2010/03/privacy-related-changes-coming-to-css-vistited/