A social utility that connects people, to keep up with friends, upload photos, share links and videos. [Description from dmoz]
When it comes to social networking, it's wise to put your best face forward. Online directory Facebook began by connecting students through social networks at schools, but has since opened its service to the general public. Users post photos and information about themselves through online profiles. The site was launched in 2004 by undergraduates at Harvard, led by Mark Zuckerberg, as an online version of the Harvard Facebook. (The name comes from books of freshmen's faces, majors, and hometowns that are distributed to incoming students.) Microsoft has a deal to be the exclusive provider of advertising to Facebook. Investors include Paypal co-founder Peter Thiel and Accel Partners. [Description from Hoover's]
This site reaches over 141 million U.S. monthly people.The typical visitor reads Huffington Post and watches MSNBC.