So you would like to write your own tweetstorms properly and do it fast? Stormcrow for iPhone has you covered. It is a clever app that turns each paragraph into a new tweet and takes care of numbering automatically. You also have the option to change the style of your threaded tweets.
The app makes it easy to edit your tweetstorms. When you are done writing, Stormcrow publishes your tweets one by one with proper numbers. You can download this tool for under $3 at this time.