Facebook has faced increasing pressure over user privacy issues as it aims to monetize user data. Its business model relies on collecting and sharing user information with advertisers to generate profits. Over time, Facebook has expanded the amount and type of personal data it collects and shares without clear user consent, such as name, photos, likes and relationships. While users initially expected some degree of privacy over their profiles and information, Facebook's privacy policies have changed in ways that give it broader access and use of user data. There remain open questions around users' reasonable expectations of privacy on social networks and online.