HubSpot just released another "State of the Twittersphere" report with lots of new data about Twitter.

This graph shows the length of tweets - you can see a lot of people cram as much as possible into the 140 characters.

By the way, the optimal Tweet length is probably about 110 characters - that allows for better reteeeting of your tweets since you can add 1-2 usernames to that tweet and it will still be under 140 characters.

Update - the report has made the front page of TechMeme with GigaOm leading the charge with their coverage.