@Lock Is it really "impromptu" if a Twitter notice goes out more than 3 hours before the event time? ;-)
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
@Lock Is it really "impromptu" if a Twitter notice goes out more than 3 hours before the event time? ;-)