No stranger to privacy fiascos, Facebook had already made the tool available to users who were posting public updates. The feature is designed to remind people how widely they share posts, what apps they use and other privacy issues.
Facebook engineering manager Raylene Yung says the tool is the result of user feedback and decisions by the company to improve the user experience. Facebook says users are sometimes worried about sharing something by accident, or sharing with the wrong audience.
Facebook will also make the default audience for new users' posts to "friends." Previously, it was set to public.