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
Indeed. As we say, we're not alone in our opinions. We were able to mention only Husserl and Whitehead, but we could have mentioned these folks too (and in other writings, each of us individually does).
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.