Definition and Usage
The <video> tag defines video, such as a movie clip or other video streams.
The Web 1.0 concept was simple: web pages linking to web pages. Then came Web 2.0 - a powerful movement from web pages to web applications. Web 2.0 applications have evolved into often slick viewports into proprietary or personal collections of information. This means they still primarily house data in silos inaccessible to and disconnected from the larger world, and most importantly, from each other.
But as we approach 2009, the clear outlines of the new web are forming. Some call this next generation the Semantic Web, but we think that term is confining, and so, instead, we refer to it as simply Web 3.0.
The new web is moving beyond connecting pages to interconnecting data objects, concepts, and things. Ultimately Web 3.0 is really about creating technology that more accurately mirrors how we see and think about the world around us.