Definition:
Web 2.0 is an idea the interrelationship between the user and the provider is what's emphasizes. It provides people with new network, a community of aggregated content or related information which is totally different from Web 1 and Web 1.5.
Web2.0 appears to mean different things to different people, so it's not easy to define exact term of "Web 2.0". I believe that Web 2.0 is new ways of searching and accessing Web content and make it possible for Internet to play and important role not only for technical thing but also as a social network which collaborated with people.
Web 2.0 could be defined the movement that Internet interfaces as communication platform for people.
Examples:
IEversince, there was Web 2.0 everyone in the world are much more connected when it comes to sharing resources online
The table below represent the change from web 1.0 through to web 2.0 aka the platform web
Web 1.0 > Web 2.0
Ofoto > Flickr
Britannica online > Wikipedia
Double Click > Google Ad sense
Publising > Participation
The Links below are some good example of websites that has the web 2.0 application:
http://www.flickr.com
Flickr is a photo sharing website and web services suite, and an online community platform. It was one of the earliest Web 2.0 applications. In addition to being a popular Web site for users to share personal photographs, the service is widely used by bloggers as a photo repository.
http://del.icio.us/
A social bookmarks manager. Using bookmarklets, you can add bookmarks to your list and categorize them.
http://www.wikipedia.org
A free content, multilingual encyclopedia written collaboratively by contributors around the world. Anyone who visit the site can edit and add contents to the site.
http://www.technorati.com
Technorati is an internet search engine for searching blogs online.
The video below shows a collection of web 2.0 websites
This video is credited to splashgraphics.blogspot.com/
