The document discusses social networks and how connected people are through only a few degrees of separation. It provides background on Stanley Milgram's small world experiment and defines social network services as online platforms for building social relationships. Major social network sites including SixDegrees, Friendster and Facebook are highlighted with launch dates. Statistics on Facebook users worldwide are presented. Social network games and a social map of worldwide users are also mentioned. A map of global Google data center locations is included.

1. http://www.softwareinlife.com
대표이사 장선진
@jangsunjin
- Mobile Phone: (+82) 010-4585-1770
- E-Mail: jangsunjin@softwareinlife.com

2. Six degrees of Separation
• 6.2 단계만 거치면 모두 아는 사람이다.
Stanley Milgram
(1933-1984)
http://www.theregister.co.uk/2008/08/04/six_degrees_microsoft/

3. SNS(Social Network Service)
• A social network service is an online service, platform, or site that
focuses on building and reflecting of social networks or social
relations among people, e.g., who share interests and/or activities.
• A social network service essentially consists of a representation of each
user (often a profile), his/her social links, and a variety of additional
services.

4. Launch Dates of Major SNS site
1997
http://jcmc.indiana.edu/vol13/issue1/boyd.ellison.html

5. Facebook
http://www.socialbakers.com/facebook-statistics/

6. SNG(Social Network Game) Market
App Leaderboard

7. Social Map Users
World Wide
http://geographics.cz/socialMap/

8. Map of all Google data center locations
http://www.wayfaring.com/maps/show/48030