Tweetshrink takes up the responsibility to shorten your tweets within the 140 character limit. It does so by replacing common phrases and words with shorter representations.
The first application to use the Tweetshrink API is the extremely popular TweetDeck application. A bookmarklet is also available. It can be dragged and dropped onto your browser's toolbar. The tweets in your Twitter web interface can be shortened using the bookmarklet.
Tweetshrink is a service aimed at Twitter users, helping shave those few extra letters off a tweet that has exceeded the 140 character maximum. The goal was really to help users who clip that max allowance without having to actively edit their tweet or changing the meaning or basic readability of the original message.
Tweetshrink cuts the FAT OFF YOUR TWEETS! - ODEO
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