If you only read one article... http://www.ft.com/vmw/w/0/0d054cbc-c5cd-11e1-a5d5-00144feabdc0.html … (ft)
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
If you only read one article... http://www.ft.com/vmw/w/0/0d054cbc-c5cd-11e1-a5d5-00144feabdc0.html … (ft)