I was taken by Thomas Baker’s description of RDF as supporting the creation of knowledge and that RDF data “speaks for itself.”
But this is possible only if metadata is preserved and its availability on the web is “reliably accessible over time and that its URIs will not be sold, re-purposed, or simply forgotten. ”Long-term preservation, Baker notes, will require distributed approaches and “arrangements of mutual support and cooperation among vocabulary maintainers.” Is FOAF a practical model? And how would we form a “coalition of memory institutions”?
Preservation concerns aside, calling the web a knowledge information repository makes sense. Here’s more information about Google’s “Knowledge Graph”: http://www.google.com/insidesearch/features/search/knowledge.html Check out the intro video. Google calls itself a “knowledge engine” — not an information engine.