You should add your Twitter account to your LinkedIn profile as it add credibility, makes it easier to share status updates across services, and will allow people to connect with you on multiple platforms.



You can add your Twitter account by going into the edit profile mode, click on "edit contact info", click on the little pencil next to the Twitter icon and adding and account (or a few). If you'd like to add more, just click the pencil icon again and the menu should come back up and allow you to add another.