Facebook is a social networking website launched in February 2004 and operated and privately owned by Facebook, Inc. Users can add people as friends and send them messages, and update their personal profiles to notify friends about themselves. It's name comes from the name of books given to students at the start of the university academic year to help students to get to know each other.
In its 6 years Facebooks membership now exceeds 400 million and if it was a country would be the fourth most populous on the planet.As a site it now has more visits than Google!
It is designed in such away that the user gives his profile which contains all manner of information about him/her. Age, Gender, Location,interests, hobbies, work and anything else you can possibly think of. This profile can either be viewed by anyone/everyone, or restricted to invited friends or kept private.
The user is allowed to invite friends up to a limit of 5000 and these friends photos and profiles are also exposed and viewable.
Facebook Videos and Photographs.
The user can add photographs and videos to his albums which are also on public display.
Facebook has a number of features with which users may interact. They include the Wall, a space on every user's profile page that allows friends to post messages for the user to see; Pokes, which allows users to send a virtual "poke" to each other and Status, which allows users to inform their friends of their whereabouts and actions. The user can post messages to his wall which is viewable by all his friends. Its function is communication and works a bit like a blog. Friends can say they like the posts and can comment on the post.
The member can join Groups. There are many hundreds of thousands of Groups but it is possible to search through categories and a search facility for Groups in your interest area.Joining a group will have the effect of members of that Group seeking to become connected with you as a friend. Once you have joined a Group it is possible to invite your friends to join and to post on that Groups wall.
You can create a Group and invite your friends to join it. As the creator or Administrator of that Group you can control what other Group members post on that Group wall.
You can also join another members page. These used to be called Fan pages until recently. You can make your own Pages and invite other members to become your fan.
There are hundreds of Facebook applications which people have written for your use and amusement. These vary in both quality and usefulness. Many are games in which you can participate and find people of common interests.