Fun read: Tumblr's Architecture http://highscalability.com/blog/2012/11/19/gone-fishin-tumblr-architecture-15-billion-page-views-a-mont.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
Fun read: Tumblr's Architecture http://highscalability.com/blog/2012/11/19/gone-fishin-tumblr-architecture-15-billion-page-views-a-mont.html …