Reading this discussion about semantics (linked to by this blog entry) it's especially encouraging to see people when they are talking about this stuff to talk about RDF and the Semantic Web.
Especially, this on the second page:
"Then I re-read G's analysis of Vijay's article (previous post in this thread) in which he points out that Google/Froogle is already extracting this semantic information from non-RDF documents and doing a pretty good job of it all things considered (even if they are trying to sell off a forum moderator, and pretty cheaply, too, I might add ).
So, if I'm understanding things correctly... we don't have to convert everything over to XML (at least not right away) in order for this to work. Which is a good thing, because there are a buncha individuals and mom & pops out there (and some companies who ought to know better and could certainly afford the upgrade) who haven't even started using CSS and HTML4.x, much less XHTML or XML."
"Think of RDF (Resource Description Framework) as the foundation. Think of XML (eXtensible Markup Language) as the formatting language used to deliver it."