Jakob Nielsen: Windows 8 -- Disappointing Usability for Both Novice & Power Users. http://1hb.r2.ly/
@azizhp -- if that's a serious question read the last section of the piece I pointed to.
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
@azizhp -- if that's a serious question read the last section of the piece I pointed to.