FB seems to be using these tools as an engagement hook, ie. find the users they know are not engaged or lurking then lure them in with targeted emails about fac

FB seems to be using these tools as an engagement hook, ie. find the users they know are not engaged or lurking then lure them in with targeted emails about face recognition and privacy features. They probably love all the publicity as it gets people back in app to configure their privacy settings. I also suspect that the privacy settings' backends are 'being figured out' and users are just turning knobs that aren't connected to anything.