Facebook is a social networking website that allows people to create personal profiles, share information, and communicate with friends and family online. It was founded by Mark Zuckerberg in 2004 and has since grown to become one of the largest social media platforms in the world, with over 2.8 billion monthly active users as of 2021.

On Facebook, users can post updates, photos, and videos, as well as like, comment, and share content posted by others. The platform also offers a range of features, including groups, pages, events, and marketplace, that allow users to connect with others who share similar interests, buy and sell items, and promote businesses or organizations.

However, Facebook has faced criticism over the years for its handling of user data and privacy concerns, as well as the spread of misinformation and fake news on its platform. The company has taken steps to address these issues, including implementing stronger data privacy policies and working with fact-checkers to reduce the spread of false information.