I wrote a blog post to celebrate the site's 10th anniversary, and to update the stats I share every year except when I forgot to do it last year. https://blog.pinboard.in/2019/07/i_cant_stop_winning/ …
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