The term "Web 2.0" is associated with web applications that facilitate
Interactive information sharing,
User-centered design and
Collaboration on the World Wide Web.
EXAMPLES OF WEB 2.0
Following are some Examples of Web 2.0 include
Hosted services, web applications
Blogs, Mashups, and Folksonomies.
Characteristics of WEB 2.0
It allow users to do more than just retrieve information.
Users can build on the interactive facilities of "Web 1.0" to provide "Network as platform" computing.
Users can own the data on a Web 2.0 site and exercise control over that data.
Sites based on Web 2.0 may have an "Architecture of participation" that encourages users to add value to the application as they use it.
Other characteristics, such as openness, freedom and collective intelligence by way of user participation, can also be viewed as essential attributes of Web 2.0.
Features and Techniques
The Best of Web 2.0
No matter the task, video, audio, or photos, we have a site that works great for what we want to do and uses all the great features of Web 2.0 technology.
Some of those sites are listed below
For Photos :: Flickr ( www.flickr.com )
For Video :: Vimeo (www.vimeo.com)
For Social Bookmarking::
Digg ( www.digg.com )
For Newsreaders / RSS:: Bloglines( www.bloglines.com )
Collaboration / Word Processing::
Writeboard ( www.writeboard.com )
Maps/Directions:: GoogleMaps (maps.google.com)
Local Directories :: Google Local ( www.google.com/local )
Chat/IM :: Meebo ( www.meebo.com )
Some Critics of the term claim that "Web 2.0" does not represent a new version of the World Wide Web at all, but merely continues to use so-called "Web 1.0" technologies and concepts. For example
Techniques such as AJAX do not replace underlying protocols like HTTP, but add an additional layer of abstraction on top of them.
Many of the ideas of Web 2.0 had already been featured in implementations on networked systems
well before the term "Web 2.0" emerged
Amazon.com, for instance, has allowed users to write reviews and consumer guides since its launch in 1995, in a form of self-publishing
But perhaps the most common criticism is that the term is unclear or simply a buzzword.
"Nobody really knows what it means...If Web 2.0 for you is blogs and wikis, then that is people to people. But that was what the Web was supposed to be all along."