With the evolving of the internet and Web 2.0 technologies, it’s only a matter of time before the term Web 3.0 becomes a main-stay in our lexicon.
Web 3.0 is the next step in the evolution of the internet. The “semantic web” is a term that is tossed around a lot which means that the internet basically works w/ you and not for you.
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I also see more virtual environments such as Second Life or Virtual Reality as the next phase of the Web.
For a great example of what the Semantic Web could be click the link below.