great discussion.. but guys nobody discuss about UPMU sites, are they good for getting baclinks? these sites are also count on web 2.0 sites.
Yes you are right. Blogger, wordpress.com, squido, hubpage, etc. are good example of web 2.0 site. You can create link wheel using them. Link wheel is like vehicle wheel where various number of spoke may be present. Every web 2.0 site will have to provide backlink to your main site. But, be careful before creating link wheel. It is not a white hat technique. If you do any mistake creating link wheel you may loose your site ranking.
Web 2.0 is a website which is build keeping the end users into consideration. Here the end users can interact with the website owner and also with other group members, share content and go viral. All these website seems to be one of the best way to build links and market your website.
The term Web 2.0 is associated with web applications that facilitate participatory information sharing, interoperability, user-centered design,[1] and collaboration on the World Wide Web. A Web 2.0 site allows users to interact and collaborate with each other in a social media dialogue as creators (prosumers) of user-generated content in a virtual community, in contrast to websites where users (consumers) are limited to the passive viewing of content that was created for them. Examples of Web 2.0 include social networking sites, blogs, wikis, video sharing sites, hosted services, web applications, mashups and folksonomies.so we can say
Web 2.0 is the term known to explain a second generation of the World Wide Web that is purposeful on the capability for people to collaborate and share information online.
Web 2.0 is the popular term for advanced Internet technology and applications including blogs, wikis, RSS and social bookmarking.
A Web 2.0 site allows users to interact and collaborate with each other in a social media dialogue as creators of user-generated content in a virtual community
The term Web 2.0 is associated with web applications that facilitate participatory information sharing, interoperability, user-centered design,and collaboration on the World Wide Web.