Cool URIs for the Semantic Web
w3.org
w3.org
A nice step forward would be by giving me a way to separate data & presentation. E.g. when a user navigates to list page 2, let me send only the data and reuse the layout html like how we can do with css.
Now, I also happen to consider the Semantic Web to be a delusion that sufficient semantic information can achieve strong AI. I may be wrong, but not any time soon. :)
(edits)
Make it so every page extension can be changed to .json, and the response is the data used to build that page.
This is exceptionally easy if you're using a templating library. Just check the extension on the current url and respond in that format (I've done the same with XML and PDF when necessary).