Software developer Stonly Baptiste has created a new Web-based service called Retwact to help people write and share corrections on Twitter. The tool, spotted by National Journal, looks at the user’s most recent tweets that have been reshared by other people on Twitter. Clicking on the green icon next to the appropriate message then brings up two dialog boxes underneath, the first of which can be used to write a simple retraction tweet. The second and arguably more useful option is to send an #RTRetract, via the @Retwact Twitter account, to all of the users who have retweeted the original message. Any user who clicks the link will then be able to see the original and corrected tweet side-by-side, cleaning up any confusion as to what has changed. The service has its shortcomings. Only being able to access the last five retweeted tweets is limiting, especially if you run an account for a brand or news organisation that issues updates on a regular basis.