Facebook announces new ‘Anonymous Login’ for third party apps
That means you’ll be able to log in to third party sites and apps anonymously, but Facebook’s holding tight to your personal details. In fact, it’s setting itself up to be even more data-rich with the new login.
Read more: Facebook announces new ‘Anonymous Login’ for third party apps
Story added 2. May 2014, content source with full text you can find at link above.