Advantages and Disadvantages of Social Networking

Introduction
Social networking can be defined as a web based service where a man can make his profile and share this profile with others. These sties are getting popular day by day. Now days these sites have become an important part of our lives. Most of us have joined any of these sites to share different things with our friends, relatives, communities etc. These sites are different in their nature.
How these sites work?
When a person joins a Social Network Site (SNS) he makes his profile. You have to mention every thing in this site like your name, father's name, date of birth, nationality, education, your interest, your school, your college etc. When you make a profile then this profile is published to the other people of the site. The other people who know you make you a friend request. You have to accept this friend request and after this you are friend of each other. Like wise you can see the list of members and you can also send friend request to other people. Like the persons who know each other, whose interest is similar, whose are from same place, whose religion is same etc become friend to each other on these sites. Now you can share different things like photos, opinion, videos etc in these sites. So, you can say that these sites provide a good platform to the people to make a healthy society.
History of Social Networking Sites
There are almost more than 100 social networking sites but the history of these sites started in the year 1997 when the first site of this purpose was launched and named as Sixdegree.com. I am providing a simple history of these sites on the years when sites were launched.

1997 – Sixdegree.com
1999 – Live journal, Asian Avenue and Black Planet
2000 – Mi Gente
2001 – Cy World , Ryze
2002 – fotolog, Friendster, Skyblog
2003 – LinkedIn, Couch surfing, Tribe.net, My Space, Hi5, Last.FM
2004 – Flickr, Piczo, Mixi, Facebook (Harvard only)
2005 – Yahoo!360, Cy world (China), You Tube, Ning, Facebook (high school...