We have just released Tweet Topics System for SMF (SMF 2.0.x RC3 and SMF 1.1.x)
This system will automatically tweet any new topic made in selected boards to your twitter account. Supports OAuth the latest api for Twitter, Bitly support for shortening topic links in the twitter feed, and there is no copyright footer added to your forum.
For more information on Tweet Topics System visithttp://www.smfhacks.com/tweet-topics-system.php
Current Community Suite customers automatically have access to this producthttp://www.smfhacks.com/index.php/board,53.0.html