Web 2.0 graphic metaphors

Can anyone tell me what is the difference between Web 1.0 and Web 2.0?

There's no difference. It's all hype.

They had to reinvent the web to attract all the investors back who got burned in the dotcom crash.

Web 2.0 is more collaborative and participatory than Web 1.0.

Ping Pong. Jason and Ken love a good conspiracy and there could be an element of truth in their views. But there's a lot of talk about the sharing notion. Tim O'Reilly gets millions of hits on his article detailing all the differences he sees between Web 1.0 and 2.0. And there's many metaphors in his analysis, too. Like his describing big presences on the web as being the head and the lots of little presences as being the long tail. Like in a comet. But I wonder if we can extend describing the web by using pictures. Here's one of a gear design of web functions, here's a poster design of all the companies, there's something like a board game which is a mix of apps and applets, and mother of all modern metaphors, there is a cloud of Web 2.0 buzzwords.

Interesting approach. Especially since the pictures themselves are not just metaphors. What the picture is of is also a metaphor.

Yes, it 's as if there are layers of metaphors, cascading from text through metaphors and splashing out on the page as a graphic mashup.