Privacy concerns vary between online contexts, with SNSs appearing to have the
potential to cause the greatest problems. This is due partly to the proliferation of
personal information within them but also due to their powerful facilities for
spreading that information, such as the News Feed feature in Facebook that
controversially broadcasts updates on Facebook activities to Friends (Hoadley et al.
2010). US female students seem to be more concerned than males about unwanted
others viewing their SNS profiles (Tufekci 2008a).