UPDATE - Twitter no longer supports the old API - see our new ACADtweet utility for the solution!
With the LISP utility Xanadu Twitter.vlx you can send tweets (status messages) directly from your AutoCAD command line.
Load the TWITTER.VLX in your AutoCAD session (e.g. with the _APPLOAD command). Then run the TWITTER command, enter your Twitter username and password, plus your message to send an update (tweet, status) to your Twitter page (timeline).
You can also use the LISP function (twitter) to automate postings (from scripts, menus, macros, project changes...):
(twitter mytwittername mytwitterpassword mymessage)
See examples at our Twitter page
You can download Twitter.vlx from www.cadstudio.cz/download
OK, we don't expect AutoCAD users will really tweet from AutoCAD, but in this way AutoCAD itself can send some semi-automatic status messages e.g. to your project twitter page