very short intros:

http://rx4rdf.liminalzone.org/RDF

http://www.rdfabout.com/

longer intros:

http://www.w3.org/2000/10/swap/Primer

http://www.w3.org/TR/rdf-primer/ the big one with almost all the

details. This is the one to take on a plane ride.

http://www.w3.org/2005/Talks/0517-boit-tbl/

http://www.adobe.com/products/xmp/pdf/whitepaper.pdf has a tiny bit

about the rdf data adobe is putting in files

http://infomesh.net/2001/swintro/ quick intro, then gets onto trust,

scaling, etc

http://logicerror.com/semanticWeb-long another intro