http://technology.timesonline.co.uk/tol/news/tech_and_web/article3532832.ece

[Moved from "google can be superseded!" – Tony]

"The next generation of web technology is likely to be far more powerful than the current crop, Tim Berners-Lee said"

http://technology.timesonline.co.uk/tol/news/tech_and_web/article3532832.ece

He continues to promote the Semantic Web idea.

Hey, that sounds familiar! :)
http://www.techcrunch.com/2008/03/13/yahoo-embraces-the-semantic-web-expect-the-web-to-organize-itself-in-a-hurry/

Google Base is Google's "toe in the water" of semantic web space, so I doubt Google will be superseded very quickly, even if the semantic web does become important.