What's the Web 2.0?_reading notes_17 Oct

What's the Web 2.0?
Social media are often discussed today in relation to Web 2.0, a term coined by Tim O'Reilly in 2004. Web 2.0 refers to a number of technical, economic, and social developments: besides social media, other important related concepts are user-generated content, network as platform, folksonomy, syndication, and mass collaboration.  I will not summarize all of these here---- Wikipedia, which is itself a example of Web 2.0, does this better than I ever could.
To get the discussion started, consider two principal tendencies of web 2.0. First, in the present decade we have seen a gradual shift from a majority of internet users accessing content produced by a much smaller number of produced by other nonprofessionals. Second, if the web of the 1990s was primarily a publishing medium, in the 2000s it has increasingly became a communication medium. Communication between users, including conversations around user-generated content, can take place in a variety of forms beside email, including "posts, comments, reviews, ratings, gestures and tokens, votes, links, badges, video." ()
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