This is (allegedly) the most downloaded music video in the history of the Internet: OK Go's Here It Goes Again. Allegedly a triumph of viral marketing and an example of the power of Web 2.0 - but it's a brilliant home made movie by a yet-to-break band. Five million downloads in one month can't be wrong! Click on the image to start the video.

But a bit of a storm is brewing up around Web 2.0. In response to all the hype, Tim Berners-Lee has pointed out that Web 2.0 is just the same old stuff as Web 1.0. But that has drawn criticism from technology commentators, who argue that Web 2.0 is certainly a new phenomenon, drawing in millions of users to use the Web in new ways.

But Tim is right: Web 2.0 is just some new applications of Web 1.0. Suddenly developers have cottoned on to the potential of connecting people together, creating social networks instead of just information networks. But it still all different ways of using interlinked web pages, and that's Web 1.0 by definition (if there were a definition of Web 1!)

The technology innovation (as opposed to the business innovation) comes in the Semantic Web, which is all about interlinking knowledge and information, not pages. Oh, and you can create some amazing Web 2.0 applications in the Semantic web which knock MySpace and Flickr off the map. (See the AKT project for starters.)

PS. But Web 2.0 is still cool and very useful. The School has four video cameras that it lends out to students - I hope that this year we will see lots of ECS content appearing on YouTube.