I believe you're misunderstanding the situation, and I don't blame you. I believe that when you log in with FB it'd bring up your typical permissions dialog tha

I believe you're misunderstanding the situation, and I don't blame you. I believe that when you log in with FB it'd bring up your typical permissions dialog that would say what permissions you're granting. Most people don't read these, and even fewer actually understand what they're really agreeing to. Much like what you see on Android today: https://www.google.com/search?q=android+excessive+permissions&oq=android+excessive+perm&aqs=chrome.1.69i57j0l2.5324j1j7&sourceid=chrome&ie=UTF-8 https://www.google.com/search?q=android+excessive+permission...