The advent of social networking calls into question many of the evaluation criterias that appeared obvious in the previous historical context. Any society in front of a revolution seeks to discover the sense of it, comparing with the previous reality. The change that contemporary society is experiencing is a real restructuring of the cultural dynamics that produce the interpretation of the facts around which it will be built the consent of the society. We are living in the “digital revolution”. With the rise of Internet, nowadays, anyone can have its personal communication channel, millions and millions of people have begun to exert a strong influence on the organization of the network and use it as if it were the “operating system” of the digital society.
Firstly, what is a social networking site? A social networking site is a site that allows users to configure a profile or a personal homepage and develop a social network online. We define social network sites those web services that allow the creation of a public or semi-public profile within a constrained system, the articulation of a list of contacts, the ability to browse the friends list of your contacts. These services allow thus to manage and strengthen existing friendships or extend our network of contacts.
From a scientific point of view the social netowork represents a telematics transposition of those social networks that make the reality of man’s daily life, made of more or less strong bonds and relationships that constitute the architecture of the human public relations. The explosion and the viral replication of social networks is also due to their simplicity, known as “user friendly”, and their recreational and entertainment component. In practice, to use one of these social, you have to subscribe to the portal, create a profile and look for friends in order to communicate with them. If communication could also occur by mail or telephone without the use of social networks, thanks to them we can have a much more multimedia view of the people we know, and we are also able to always know, in real time , what they do, what they think or who they know.
Accordind to Thomas Nordlund training director of Unaico Sitetalk: the social networking sites have made their appearance in the nineties, with the first online community sites (in 1994 Geocities, Tripod in 1995). The concept of these sites was to bring together people interested in common subjects and allow them to interact through chat rooms and personal homepages which helped the publication of content created by the users: this mechanism was ahead of the phenomenon of blogging which is still in a booming phase.
Some communities had a different approach, as they decided to emphasize the links between former schoolmates (Classmates in 1995), born from a similar approach Facebook (2004). Friendster had a great impact all over the world. He reached the pinnacle of success in 2002 and then began to falter in 2004 compared to other sites, now it’s used mainly in Asia. MySpace was born in 2003, and in 2005 had a higher number of page views than Google and that same year it was purchased by Robert Murdoch’s News Corporation. Facebook emerged in 2004, born in the Harvard University, it had a rapid growth becoming the most successful social network in the world. A recent study, based on a comparison of data traffic resulting from Alexa, Google Trends for Websites and comScore, shows that Facebook advances in a growing number of nations, even where until a few years ago, MySpace was trying to resist, for example the United States. Professional social networks such as Linkedin are designed to allow communication among people who want or need to stay in the labor market. The fastest growing phenomenon today is Twitter, born in 2006, it became, after Facebook and MySpace, the third most visited social network.
The most popular social network in the world are: Facebook, MySpace, Hi5, Flickr, Skyrock, Friendster, Tagged, LiveJournal, Orkut, Fotolog, Bebo.com, LinkedIn, Badoo.Com, Multiply, Imeem, Ning, Last.fm,Sitetalk,Unaico, Twitter, MyYearbook, Vkontakte, aSmallWorld, Windows Live, Xiaonei.