Board Thread:Questions and Answers/@comment-6550319-20130327181945/@comment-1004812-20130327190759

Facebook login in-game?

No. Not that I know of. Unless you manually tell it to share something.

Meanwhile, you can disable the app to not post for you or even make its visibility private in your FB's Privacy Settings>Apps.

A small thumbnail of your FB profile pic will be seen by everyone in-game though.