Facebook has grown enormously since its founding as a social network for Harvard students. It now has over 100 million users worldwide who use it for social communication through photo sharing, instant messaging, posting personal information, and blogging. Recently, Facebook changed its layout and tools, which has been met with criticism about increased confusion and advertisements. However, the document argues Facebook is still useful for easily connecting with friends, affordable long-distance communication, joining interest groups, and potentially academic uses like practicing research and debate skills. Benefits include free usage and security controls, though drawbacks include a slower interface and erratic chat features. Overall, the document recommends joining Facebook to reconnect with lost friends.