facebook by baraya666


									Facebook is a social networking service and website launched in February 2004, operated and
privately owned by Facebook, Inc. As of January 2011, Facebook has more than 600 million
active users. Users may create a personal profile, add other users as friends, and exchange
messages, including automatic notifications when they update their profile. Facebook users must
register before using the site. Additionally, users may join common-interest user groups,
organized by workplace, school or college, or other characteristics. The name of the service
stems from the colloquial name for the book given to students at the start of the academic year by
university administrations in the United States to help students get to know each other better.
Facebook allows any users who declare themselves to be at least 13 years old to become
registered users of the website.

Facebook was founded by Mark Zuckerberg with his college roommates and fellow computer
science students Eduardo Saverin, Dustin Moskovitz and Chris Hughes. The website's
membership was initially limited by the founders to Harvard students, but was expanded to other
colleges in the Boston area, the Ivy League, and Stanford University. It gradually added support
for students at various other universities before opening to high school students, and, finally, to
anyone aged 13 and over, but based on ConsumersReports.org on May 2011, there are 7.5
million children under 13 with accounts, violating the site's terms.

A January 2009 Compete.com study ranked Facebook as the most used social networking service
by worldwide monthly active users, followed by MySpace. Entertainment Weekly included the
site on its end-of-the-decade "best-of" list, saying, "How on earth did we stalk our exes,
remember our co-workers' birthdays, bug our friends, and play a rousing game of Scrabulous
before Facebook?" Quantcast estimates Facebook has 138.9 million monthly unique U.S. visitors
in May 2011. According to Social Media Today, in April 2010 an estimated 41.6% of the U.S.
population had a Facebook account. Nevertheless, facebook's market growth started to stall in
some regions, with the site losing 7 million active users in the United States and Canada in May


Mark Zuckerberg wrote Facemash, the predecessor to Facebook, on October 28, 2003, while attending
Harvard as a sophomore. According to The Harvard Crimson, the site was comparable to Hot or Not, and
"used photos compiled from the online facebooks of nine houses, placing two next to each other at a
time and asking users to choose the 'hotter' person". To accomplish this, Zuckerberg hacked into the
protected areas of Harvard's computer network and copied the houses' private dormitory ID images.
Harvard at that time did not have a student "facebook" (a directory with photos and basic information).
Facemash attracted 450 visitors and 22,000 photo-views in its first four hours online.

The site was quickly forwarded to several campus group list-servers, but was shut down a few days later
by the Harvard administration. Zuckerberg was charged by the administration with breach of security,
violating copyrights, and violating individual privacy, and faced expulsion. Ultimately, however, the
charges were dropped. Zuckerberg expanded on this initial project that semester by creating a social
study tool ahead of an art history final, by uploading 500 Augustan images to a website, with one image
per page along with a comment section. He opened the site up to his classmates, and people started
sharing their notes.

The following semester, Zuckerberg began writing code for a new website in January 2004. He was
inspired, he said, by an editorial in The Harvard Crimson about the Facemash incident. On February 4,
2004, Zuckerberg launched "Thefacebook", originally located at thefacebook.com.

Six days after the site launched, three Harvard seniors, Cameron Winklevoss, Tyler Winklevoss, and
Divya Narendra, accused Zuckerberg of intentionally misleading them into believing he would help them
build a social network called HarvardConnection.com, while he was instead using their ideas to build a
competing product. The three complained to the Harvard Crimson, and the newspaper began an
investigation. The three later filed a lawsuit against Zuckerberg, subsequently settling.

Membership was initially restricted to students of Harvard College, and within the first month, more
than half the undergraduate population at Harvard was registered on the service. Eduardo Saverin
(business aspects), Dustin Moskovitz (programmer), Andrew McCollum (graphic artist), and Chris Hughes
soon joined Zuckerberg to help promote the website. In March 2004, Facebook expanded to Stanford,
Columbia, and Yale. It soon opened to the other Ivy League schools, Boston University, New York
University, MIT, and gradually most universities in Canada and the United States.

Facebook incorporated in the summer of 2004, and the entrepreneur Sean Parker, who had been
informally advising Zuckerberg, became the company's president. In June 2004, Facebook moved its
base of operations to Palo Alto, California. It received its first investment later that month from PayPal
co-founder Peter Thiel. The company dropped The from its name after purchasing the domain name
facebook.com in 2005 for $200,000.

Facebook launched a high-school version in September 2005, which Zuckerberg called the next logical
step. At that time, high-school networks required an invitation to join. Facebook later expanded
membership eligibility to employees of several companies, including Apple Inc. and Microsoft. Facebook
was then opened on September 26, 2006, to everyone of age 13 and older with a valid email address.

On October 24, 2007, Microsoft announced that it had purchased a 1.6% share of Facebook for $240
million, giving Facebook a total implied value of around $15 billion. Microsoft's purchase included rights
to place international ads on Facebook. In October 2008, Facebook announced that it would set up its
international headquarters in Dublin, Ireland. In September 2009, Facebook said that it had turned cash-
flow positive for the first time. In November 2010, based on SecondMarket Inc., an exchange for shares
of privately held companies, Facebook's value was $41 billion (slightly surpassing eBay's) and it became
the third largest US web company after Google and Amazon. Facebook has been identified as a possible
candidate for an IPO by 2013.
Traffic to Facebook increased steadily after 2009. More people visited Facebook than Google for the
week ending March 13, 2010.

In March 2011 it was reported that Facebook removes approximately 20,000 profiles from the site every
day for various infractions, including spam, inappropriate content and underage use, as part of its efforts
to boost cyber security.

In early 2011, Facebook announced plans to move to its new headquarters, the former Sun
Microsystems campus in Menlo Park, California.

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