Facebook is a social networking website. Users can select to join one or more participating networks, such as a school, place of employment, geographic region, or social group. After creating personal profiles users can share information quickly and openly with large social networks. A Facebook member can create: Profiles, Groups, Networks, Public Pages and Applications.
Profile:
Each member has their own individual profile which contains information about that member. You can also add friends to your profile and see what activities they are involved in. Profiles are currently limited to 5,000 friends. Profile information by default can usually be seen by anyone on your friend list, group or networks that you have joined.
Groups:
Groups are created by members to discuss certain topics such as social issues, fan clubs, sports, etc. Groups are also limited to 5,000 members.
Networks:
A Network can be created to represent a certain region, school or company. For example the Cape Coral/Fort Myers area network. You can suggest a new Network to Facebook and if enough people are requesting a network with that title they will create one.
Public Pages:
Non-Profit Organizaitons, Entertainers, and Public Figures can create public pages that other members can become "fans" of. Fans can stay up to date with the organizations events, photos, and videos without requiring to add them as friends. You can become a fan of up to 1,000 public pages. Public Pages do not have access to fans profiles.
Applications:
Facebook profiles by default utilitzes their main applications such as events, groups, photos, videos, discussions and notes, however there is also a large community with many third party applications. Many of these applications require direct access to your profile information in order to work. Members should use caution installing these extra applications since Facebook cannot review them all for security vulnerabilities.