Facebook offers a variety of apps, including quizzes, games, and corporate sweepstakes, which users should manage carefully to control the information these apps access. Experts like Johan Edholm from Detectify advise users to scrutinize the permissions requested by apps to ensure the information shared is reasonable and necessary. If an app is no longer in use, it is wise to revoke its access to prevent unnecessary data sharing, as users effectively pay for these services with their personal information. To manage app permissions, users can navigate to Settings > Apps on Facebook to review which apps are currently accessing their data through "logged in with Facebook."