I think the right way is to put things under the domain. So data.google.com, or google.com/data or even a META tag on a web page that tells the browser the URL for the data relevant to a particular page.
Yep. Just call it a New Kind of Internet.
Edit: Relevant:
Edit2: Amazon removed the review! Search for "A new kind of review" on this page
As for that notion, maybe we should switch to naming it such as we do for java packages :D
Google.com would be com.google.search, com.google.mail, etc :P
"I have to say that now I regret that the syntax is so clumsy. I would like http://www.example.com/foo/bar/baz to be just written http:com/example/foo/bar/baz where the client would figure out that www.example.com existed and was the server to contact. But it is too late now."