Link your online friends to their contact information
You can link your online friends' profiles from social networking services to their contact information in your device. After linking, you can view their contact information directly from the Social application, and see their latest status updates in your contacts list.
Select Menu > Social .
Select an online friend's profile picture.
From the pop-up menu, select Link Profile to Contact.
From your contacts list, select the contact to which to link the profile.