Today's Signal release for Android, iOS, and Desktop includes the ability to send arbitrary file types.pic.twitter.com/LfRkGxFvZc
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
Dunno. Will have to ask.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.