This is excellent. I got both wrong answers (19, 26) before getting the right one. Lovely abstraction leaks.pic.twitter.com/WOhpNGx0Qf
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
Yes, but the valuation is dependent on quantity, which is changing. In Naveens proposed (no doubt facetious) solution that is not handled.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.