Facebook provides users a way to restrict and specify the types of users that can view
different parts of their profile. They can control who can search for them, who can view their
profile, who can see their contact information, and who can see various other profile details. The
types of users they can choose from to view parts of their profile are users attending the same
school, just friends, and friends of friends at the same school. Friends can always view
everything. For profile searches, users can allow everyone, or some subset of people to search for
them. They also have the option of blocking specific people.