Weird: the Android @Twitter app won't let me post a tweet starting with the characters "D &", it disables the Tweet button. Never seen that.
I saw something similar recently in the web client, too. Some leftover from the old SMS days?
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
I saw something similar recently in the web client, too. Some leftover from the old SMS days?