I use a combination of xprofile and BuddyPress Profile Privacy. Granted this does not automatically create new ‘tabs’ it does allow you to separate Profile Fields into Groups and give the user control of who has access to what. I have a separate group for Social Networks. This allows the user to enter their social network information. Facebook Profile, Twitter, MSN, AIM, etc. This Social Network ‘group’ is displayed below the user’s other profile information.
