Check out this discussion on reddit.com of what Facebook shares with other Facebook users, Application Developers and Facebook Partner sites. Notice there are some things you cannot prevent some applications from knowing.
From the discussion, it seems all these are turned on by default.
Profit above Privacy.
In honor of National Kill Your Facebook Page Day, this site has been created to facilitate the process of leaving Facebook.
Why should I leave facebook you ask? Here are some links to show you why some people think you should.
Business Insider: 10 Reasons to Delete Your Facebook Account
Facebook Just Doesn’t Get Why People Are Concerned
Ever tried to leave Facebook and found out they only allow you to “deactivate” your account? All your personal data, including photos, interests, friends etc will still be saved indefinitely! You don’t have to be a conspiracist to find this quite fishy (or simply annoying)!
Check out our guides to delete your account in the top menu.
Deactivate – Close your account, but still be able to reactivate it at any time.
Delete – Completely delete your account for good. (Once the 14 day think-it-over period is over)
Wipe From Existence – A special technique for wiping your account out in one easy step!
