Facebook is a social networking website that is operated and privately owned by Facebook, Inc.[1] Users can add friends and send them messages, and update their personal profiles to notify friends about themselves. Additionally, users can join networks organized by city, workplace, school, and region. The website's name stems from the colloquial name of a book given to incoming students at Zuckerberg's high school alma mater, Phillips Exeter Academy. The book shows the faces and names of the school's students and faculty.