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** Facebook **

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This article is about the social networking service. For the type of
directory, see face book.

Facebook, Inc.
Facebook New Logo (2015).svg
Facebook (login, signup page).jpgFacebook login/signup screen
Type Public
Traded as NASDAQ: FB
NASDAQ-100 Component
S&P 500 Component
Founded February 4, 2004; 11 years ago (2004-02-04)
Headquarters Menlo Park, California, US
Coordinates 37°29′05″N 122°08′54″W /
37.4848°N 122.1484°W / 37.4848; -122.1484Coordinates:
37°29′05″N 122°08′54″W / 37.4848°N
122.1484°W / 37.4848; -122.1484
Area served United States (2004–05)
Worldwide, except blocked countries (2005–present)
Founder(s) · Mark Zuckerberg
· Eduardo Saverin
· Andrew McCollum
· Dustin Moskovitz
· Chris Hughes

Key people Mark Zuckerberg
(Chairman and CEO)
Sheryl Sandberg
Industry Internet
Revenue Increase US$12.466 billion (2014)^[1]
Operating income Increase US$4.982 billion (2014)^[1]
Net income Increase US$2.94 billion (2014)^[1]
Total assets Increase US$40.184 billion (2014)^[1]
Total equity Increase US$36.096 billion (2014)^[1]
Employees 10,082 (March 2015)^[2]
Subsidiaries Instagram
Oculus VR
Website Tor: facebookcorewwwi.onion^[3]
Written in C++, PHP (as HHVM)^[4] and D language^[5]
Alexa rank Steady 2 (July 2015^[update])^[6]
Type of site Social networking service
Registration Required
Users Increase 1.44 billion monthly active users (March 31, 2015)^[7]
Available in Multilingual (140)
Current status Active

*Facebook* is an online social networking service headquartered in Menlo
Park, California. Its website was launched on February 4, 2004, by Mark
Zuckerberg with his Harvard College roommates and fellow students Eduardo
Saverin, Andrew McCollum, Dustin Moskovitz and Chris Hughes.^[8]^[9] The
founders had initially limited the website's membership to Harvard
students, but later expanded it to colleges in the Boston area, the Ivy
League, and Stanford University. It gradually added support


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