Facebook is not enabled for Your World Paid/Education edition. The following applies for Your World free (including in-app purchase upgrade).
We do not store any of your personal information on our servers, or share any of your Facebook details with any other users or 3rd parties. We may allow you to post content to your Facebook from within the application, as long as you have signed-in and allowed our applications to post on your behalf. We may also pull down a list of your friends to your device in order for you to play games with friends. This information will not be shared to any other 3rd party.
We only collect non-personalized application usage and related metrics to enable us to optimize the user-experience and resolve issues. We do not capture personal identification data.