The Profile2 tool, located in My Workspace site, allows you to display information about yourself in Trunk, and provides basic social networking capability. Information posted in your profile appears in the Trunk Roster tool. In Profile2, You can add a photo, search for users with common interests, post tweets to your Twitter account and even create status updates. Uploading a picture to your profile (that will appear in your course rosters as a result) is a helpful way for instructors to identify you.
The Privacy settings in Profile2 allow you to decide who you share information with. Privacy options include, everyone, only my connections or only me.