Publish full articles without needing a blog or site. There's no setup or login. Just write your text and Write4net will publish it using your Twitter account.
WordTwit is a plugin that utilizes the Twitter API to automatically push a published post to your Twitter account as a tweet, using the blog domain as a short URL.
"The smart thing to be doing online these days is tumblelogging, which is to weblogs what text messages are to email - short, to the point, and direct."