Great module, just one request:
If the node title is included in the Tweet, and is quite long, the tweet created can be close to (or even over) 140 caracters before the user has added anything to the Tweet. (In this case, it simply displays the tweet with a negative count for carachters remaining.) While it's admittedly unusual for titles to be this long, it would be nice to have the option of truncating all titles at a certain length (as is done by TweetMeme). In my humble opinion, truncating at a certain length should even be the default option.