Famisha

What is Web 2.0
Tim O’Reilly has redefined the Internet as a platform: a space of exchange among users (that is what he calls collective intelligence) and services or applications online. These innovations gradually expand existing services to form a combination of innovation to provide a different experience.
They allow users to identify the site and vice versa sites retain users.

A stronger contribution of users
Although the phenomenon of blogs tends to slow, its success is not to deny, 80 million worldwide. The rise of blogs is partly due to the need for users to have a space of expression and freedom and to become a producer of content.
This is also wikis whose popularity is growing. The example is the Wikipedia, the collaborative online encyclopedia, which is currently declinations: Wikinews, Wikibooks, and Wikitravel. This phenomenon has accelerated the process of perpetual innovation, Internet and ergonomic tools available to users who have given rise to distention wider ownership of these innovations but also to greater fluidity the flow of information through mechanisms syndication and RSS.

The revival of social networks
The contribution of these innovations has revolutionized the social network as it was originally. The future is now for the professional network. Linkdln, Viadeo, and others propose to carry out a form online identity to find contacts and build a network of relationships. These networks in the future become our only protection against intrusion attempts. It will thus be part of a circle of knowledge “to seek and be sought (e-mail, instant messaging, SMS, ..). Social surfing is not a myth, because there are already Rollyo or Yahoo! proposes not to visit the websites and sources of information that members endorse the network.
Other networks have gone even further especially in human resources where some recruitment sites based squarely on the principle of cooptation such as Jobster in the United States.
But the collaboration can take other forms. One that allows such users to organize their content (photos, music, ..) applying to each of one or more tags. These tags are then pooled by a classification system based on keywords and then the more relevant statistics are published (Hi5, Flickr).
The future of collaborative services focus on managing reputation online. The notice of a user on an article, a product or a website will be more echo especially if that person has a high confidence index. Some sites are already applying the principle of Ctoc (eBay, Priceminister, …) which will spread to other areas. But the next step would be the establishment of an independent manager whose reputation and online services would seek to authenticate a person’s reputation.

Better service convergence
The emergence of XML and API has injected a new wind to web services. They have helped to combine different services for a better rendering to the end user. Google Maps is the pioneer of these new services from a mapping has increased services such as the location of a property (HousingMaps.com) or statistics of Criminology in the city of Chicago (ChicagoCrime.org). Personal portals have also taken a blow to young. Sites such as Windows Live include other services which allows the user to have a single portal to view its various services (webmail, weather, information, ..).

Soon the concrete contributions of Web 2.0