Access to Facebook is free of charge, and the company earns most of its money from advertisements on the website. New users can create profiles, upload photos, join a pre-existing group, and start new groups. The site has many components, including Timeline, a space on each user’s profile page where users can post their content and friends can post messages; Status, which enables users to alert friends to their current location or situation; and News Feed, which informs users of changes to their friends’ profiles and status. Users can chat with each other and send each other private messages. Users can signal their approval of content on Facebook with the Like button, a feature that also appears on many other Web sites.

The attractiveness of Facebook stems in part from cofounder Zuckerberg’s insistence from the very beginning that members be transparent about who they are; users are forbidden from adopting false identities. The company’s management argued that transparency is necessary for forming personal relationships, sharing ideas and information, and building up society as a whole. It also noted that the bottom-up. Peer to peer connectivity among Facebook users makes it easier for businesses to connect their products with consumers.

Marketplace – allows members to post, read and respond to classified ads.

Groups – allows members who have common interests to find each other and interact.

Events – allows members to publicize an event, invite guests and track who plans to attend.

Pages – allows members to create and promote a public page built around a specific topic.

Presence technology – allows members to see which contacts are online and chat.