The term "web 2.0" was proposed as part of a conference held in August 2004 which reported on the transformation trend of web "platform shared data through the development of applications that come from architecting social networks the essential contribution of users in content creation and publishing formats "(blogs, wikis ...). The definition was further popularized by Tim O'Reilly, founder and president of the American publishing house O'Reilly computer, in an article published September 30, 2005 which laid down the principles. For him, the key to success in this new stage of evolution of the Web lies in collective intelligence. "Web 2.0 is a set of design patterns: architectural systems more intelligent that allow people to use, lightweight business models that enable syndication and co-operation and data services. Web 2.0 is the appropriation by users of new tools belonging to the movement "open source" to publish digital content through blogs, wikis, share photos, movies or videos and other applications still .
The blogging phenomenon is one of the most remarkable features of the web 2.0 era. A blog is a website consisting of notes or notes (English posts) classified according to their date of publication. The success of the blog comes from a great ease of publication, a great editorial freedom and the ability of real time interaction with the readership.
A blog can incorporate an RSS feed which is a simple text file in XML format with a concise description of content and enabling the automatic distribution of updates to the blog or any website.
nother application is the participatory wiki. A wiki is a content management website that makes web pages and editable achievable by successive visitors allowed. The word wiki comes from the repetition Hawaiian wiki wiki, meaning quick. The best known example is the Wikipedia encyclopedia collective founded in 2001 based on the principle that an entry can be added by any user of the Web and modified by another.
Blogs and wikis have paved the way for the simple text. The many sites for sharing photos and videos are aiming to make the distribution of images as simple as texts on blogs. This is particularly the case of Flickr and YouTube.
Flickr developed in 2002 by a Canadian company, since acquired by Yahoo, is a free website dissemination and sharing of photographs, whose organization resembles that of a virtual community.
YouTube was created in 2005, since bought by Google. This is a website for sharing videos that users can upload, view and share video clips. Videos are available by category and by using keywords (tags) as on Flickr. Conditions of use You Tube are strict: the user must have rights, including rights of music videos that he posts.
The most interesting aspects of Web 2.0 are new tools that explore the continuum between the personal and the social as well as the tools that come with a remarkable degree of modularity allows remixabilité collaborative process by which information and ...