Facebook's online policy primer outlines the site's terms and conditions for users. It states that anything users post, including photos and videos, can be used by Facebook and will remain in backup files even if deleted. It also explains that third party applications will have access to users' personal information. The policy emphasizes users' responsibility for their own content and compliance with rules regarding privacy settings, copyright, children's access, safety, and more. Users are fully responsible for anything they post on Facebook.