The purpose of Facebook:

• 'To give people the power to share and make the world more open and connected,' says Facebook's mission statement. Facebook notes on its website that it believes that increasing people's connections through the platform will lead to improved understanding between different groups.
• According to the company's statement of principles, Facebook is supposed to be free for its users; it should allow them control over their information and who may access it.
• Businesses, organisations, and public figures can use Facebook to engage with customers, admirers, and constituents.

Read More: How important is Facebook really?