Web 2.0 it's a concept that was coined in 2003 and which refers to the social phenomenon that arose from the development of various applications in Internet . The term distinguishes between the first era of the Web (where the user was basically a taxpayer who received the information or published it, without there being too many possibilities for the interaction to be generated) and the revolution that led to the rise of blogs, social networks and other related tools.
Web 2.0, therefore, is made up of platforms for publishing content, such as Blogger , social networks, like Facebook , the services known as wikis (Wikipedia ) and photo, audio or video hosting portals (Flickr , Youtube ). The essence of these tools is the possibility of interacting with the rest of the users or providing content that enriches the browsing experience.
It is important to keep in mind that there is no precise definition of Web 2.0, although it is possible to approach it by establishing certain parameters. A web page that is limited to displaying information and that is not even updated is part of the generation 1.0. On the other hand, when the pages offer a considerable level of interaction and are updated with the contributions of the users, we talk about Web 2.0.
It is worth mentioning that the differences between the first and the second was of the Web they are not based on a change at the technological level in the servers, although of course there has been a considerable advance in the hardware; It is the focus of the Network, the objectives and the way in which users began to perceive online information that characterizes this rebirth, which took place silently but quickly, at the beginning of the new millennium.
Until then, the Internet was a universe of mostly static data, a source of revolutionary consultation that attracted millions of people to contemplate passively. Although the forums and chat date from Web 1.0, they were well differentiated from the sites traditional (as is currently the case); Sailing was similar to visiting a large shopping center, with countless stores, in which it was possible to buy products, but not alter their windows.
With the arrival of Web 2.0, there was a phenomenon social that changed our relationship with information forever, mainly because made us part of it: At present, news about a demonstration against animal abuse is not complete without showing how many Facebook users read and enjoyed it, what percentage of readers are in favor of the movement, and the comments, which many times contribute important data or indicate errors.
As with any milestone in the history of mankind, the democracy associated with Web 2.0 has had a serious impact on traditional media, especially those who failed to adapt to this new wave of freedom. The last decade has seen the birth of several independent newspapers and magazines that have managed to establish themselves and achieve great worldwide success, as opposed to the decay of ancient colossi.
It is not easy for journalists to accept that under an article that took days of investigation and elaboration, users have the right to insult and despise them, to threaten their families or to hang photomontages with their faces; but these are some of the negative consequences of Web 2.0, and only by accepting them and cunningly avoiding abuse is it possible to achieve success without dying in the attempt.
Some experts associate the Web 3.0 to Semantic web , which consists of the inclusion of semantic or ontological metadata (which describe the contents and the relationships between the data) so that they can be tracked by processing systems.