The App data sharing control seems and excellent step.
Today at f8, we announced Anonymous Login, a brand new way to log into apps without sharing any personal information from Facebook, along with a new version of Facebook Login with even better privacy controls.
People tell us they’re sometimes worried about sharing information with apps and want more choice and control over what personal information apps receive. Today’s announcements put power and control squarely in people’s hands:
Anonymous Login: An easy way for people to try an app without sharing any of their personal information from Facebook.
Facebook Login: A new version that gives people the option to pick and choose what information apps get.