You can share project activity on Twitter via your project’s Integrations page:
Click the Settings tab in your project view, then choose Integrations in the sidebar.
Click Authorize Twitter.
After being passed to Twitter to confirm Tracker’s access to your Twitter account, Tracker will begin sending updates about new stories and comments, and when stories are delivered, accepted, or rejected. They include a shortened link to the story in Tracker.
If you want to turn off the Twitter integration, return to the Integrations page and click Remove Twitter Credentials.