Facebook is an appplication that you can use to keep in touch with ur current friends....look up old friends u've lost contact with...and meet new ones...It keeps u updated with their recent activities and thoughts....U can share photos,videos,and links with others as well as comment on theirs... There are a wide variety of interesting quizzes,interviews,and tests that u can take and share ur results as well as see the results of ur friends.....u can also create ur own quizzes and find out how well ur friends know u...There are many online games(including poker)where u can compete against ur friends for the highest scores... There are also many blogs and groups that u can become an active memeber of...U can also use facebook to chat with ur friends...so yea facebook is fun... :)

It is a social networking sites. You can keep in touch with friends, and make new ones.