For me it comes up "false" since none of my info is set for public or open to everyone. You can check your own if you have a facebook account.
When you add a Facebook application, it has access to nothing until:
1) the application pops up a dialog box to ask you for specific permissions
2) you agree to those permissions
Most apps will ask for "Basic Information" which is: name, profile picture, gender, networks, User ID, list of friends, and public information (any information you've made public / open to everyone).
If you want to see information available about you through our Graph API, ht tps://graph.facebook.com/[User ID or Username]?metadata=1 just type into your browser.