|« Turing Test||Videos »|
This is what the Twitter plugin has to say about itself:
User ID#1 must first register your installation as an application. After that each user will be able to trust the application on their profile page or the write page. When a post is made it will tweet in your name whatever you set up for the message parameter. The default is $twitcerpt$, which will create an excerpt and link that total 140 characters.