facebook - Social Network

INTRODUCTION :

Facebook is the social networking site. Founded by Mark Zuckerberg in 4th February 2004.

ABOUT:

Facebook users must register before use that site.
Users may create own profile, and add the other users to friend.
And they will exchange the messages, videos, photos.
Facebook users must complete 13 years old.
But one report say, more than 7.5 million facebook users are under 13 years old.

ACHIVEMENTS:

1) facebook has 600 million users. (2010 report)

2) facebook brand value is US$ 2 billion. (2010 report)