Messages is really, really, really iChat http://www.leancrew.com/all-this/2012/02/messages-is-really-really-really-ichat/ …
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
Messages is really, really, really iChat http://www.leancrew.com/all-this/2012/02/messages-is-really-really-really-ichat/ …