I have added a number of updates to Tracked Tweets:

• Default “Tweet this” setting – you can now define this on a global level, then override it on a per-post level
• If tweet is too long, characters are stripped off the title (in the tweet) until it is short enough to be tweeted (thanks Lionel)
• If post is saved as a draft, then published, tweet is now sent (this did not work previously) – thanks Michael

Development has been a bit slow on this, due to both a lack of time, and confusion in learning PHP

Let me know if you have any feedback. Download from Wordpress Plugin Directory.