Facebook has extensive privacy settings, controlling access to nearly all profile
information. The settings are accessed through a privacy link displayed on the
top right of a user’s profile. This link brings up a privacy overview page with
six information categories. Each of these links, some of which link to
additional sub pages, opens a page of menus and checkboxes to set privacy
levels or control information flow. Alternatively, a few settings are visible
while entering or editing profile information, namely for the birthday and
contact information. Users can generally choose to show information to no
one, friends, or some or all of their networks (university, region, or
workplace).