Raw

Apparently(and here) Google have bought have bought Applied Semantics, "… company that provides domain name, contextual advertising and enterprise search solutions".

What's interesting is how they do it :

"A massive ontology, or knowledge base of concepts and their relationships, lies at the heart of all Applied Semantics software products. That means that the software already understands what a word or phrase means and how it relates to other concepts in a document or web page. "

Applied Semantics, Inc. - CIRCA Technology

[Danny Ayers]