Not defending Facebook, but hasn't the newsfeed algorithm been "emotionally manipulating" users for many years now? http://online.wsj.com/articles/furor-erupts-over-facebook-experiment-on-users-1404085840 …
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