Web 2.0 is a broad definition that caters for many features of the internet in the modern world. The differences between Web 2.0 and Web 1.0, is that Web 2.0 has the ability for users to interact with other users.
Although this may seem as an advance within modern technology, this feature was available on 1995, with the Web 1.0 site www.amazon.com; this site allowed users to view and comment on items displayed on the site. Therefore Web 2.0 is a refined "version" of what Web 1.0 had introduced within the beginning years of the internet.
The "Web" is a system that has the term "evolution"as a constant reminder to users; advances have already taken place to allow online users to interact even more with one another . Advances such as dial-up to broadband technology, web advances (blogs, search engines, online sharing), as well as technological advances such as personal computers, laptops, digital cameras and video cameras, all correlate to the advance of the "Web" as a whole.
Reference:-
Marc Andreessen webpage, online. http://blog.pmarca.com/2007/06/why_theres_no_s.html. last accessed 17 Mar 2009
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