colons in URI path segments in RDF? (Form Post from Firefox)

report=are colons really allowed in URIs like this? I'm not sure to what extent the RDF validation service checks URIs, but I vaguely remember it giving very pedantic messages about them.
RDF=<?xml version="1.0">
<?xml version="1.0"?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
  xmlns:dc="http://purl.org/dc/elements/1.1/">
  <rdf:Description rdf:about="./foo:bar">
    <dc:title>World Wide Web Consortium</dc:title> 
  </rdf:Description>
</rdf:RDF>
  

Received on Tuesday, 7 March 2006 21:29:44 UTC