Your Protected List is the list of people that you allow to read your Protected Posts.

You can have complete control over who gets this privilege, by managing your Protected List.  See:

How do I give someone access to my Protected Posts?
http://help.xanga.com/howdoigivesomeoneaccesstopp.htm

How do I take someone off of my Protected List?
http://help.xanga.com/howdoitakesomeoneoffpp.htm