Identi.ca: @dustin "Atom over XMPP" defines a "delete" message that solves problem you mentioned: See: http://tinyurl.com/6k8anf
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
Identi.ca: @dustin "Atom over XMPP" defines a "delete" message that solves problem you mentioned: See: http://tinyurl.com/6k8anf