The document discusses social networking services (SNS). It defines SNS as online services that focus on building social networks among people who share interests. It provides details on major SNS sites including Facebook, which launched in 2004 and has over 800 million users, Twitter, which allows posting of 140 character messages and has 200 million users, and Cyworld, a Korean SNS launched in 1999. The document also briefly mentions other SNS types like image/video hosting and social news sites.

1. 20102665 Hwang Jeonghwa

2. What is the SNS?
• SNS(Social Networking Service) is an online service,
platform, or site that focuses on building and reflecting of
social network or social relations among people, who, for
example, share interests and/or activities. Web based social
networking services make it possible to connect people who
share interests and activities across political, economic, and
geographic borders.
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3. SNS sites
-Facebook
• Facebook is a social network
web site launched in February
2004.
• Facebook was founded by Mark
Zukerberg with his friends.
• The web site’s membership was
initially limited by the founders to
Harvard students, but was
expended other area.
• As of July 2011, Facebook has
more than 800 million active
users.
• A january 2009 Compete.com
study ranked Facebook as the
most used social networking
service by worldwide monthly
active users, followed by
MySpace.
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4. SNS sites
-Twitter
• Twitter is an online social
networking and micro blogging
service that enables its users to
send and read text-based posts
of up to 140 characters,
informally known as “tweets”
• Twitter was created in March
2006 by Jack Dorsey and
launched that July.
• In 2011, 200 million people use
Twitter
• nowadays, Lots of celebrities and
politicians using Twitter to
communicate with their fans.
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5. SNS sites
-Cyworld
• Cyworld is a Korean social network
service operated by SK
Communications.
• Cyworld launched in 1999 and it was
purchased by SK Comuunications in
2003.
• Members cultivate relationship by
forming Ilchon(일촌) or “friendship”
with each other through their
minihompy.
• The “Cy( 사 이 )” in cyworld mean
“cyber” but is also a pun on the
Korean word for relationship.
• Revenue is generated through the
sale of “Dotori”(adorns), which can
then be used to purchase virtual
goods such as virtual appliances and
background music.
• But, their commercialization and
leakage of personal information 5
resulted in decrease of users.

6. SNS
-o
Image and video hosting
Video-sharing web site
web site
Social news web site Miniblog
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7. References
• Information:
– http://en.wikipedia.org/wiki/Social_networking_service
– http://en.wikipedia.org/wiki/Facebook
– http://en.wikipedia.org/wiki/Twitter
– http://en.wikipedia.org/wiki/Cyworld
• Images:
– Google image
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