RE: Ontology entity IDs

As I've mentioned earlier, I'm more comfortable with the sort of URI
Alan presents below, than one where term strings are used as IDs.  In
essence, the string 'GO' becomes a namespace ID, even if XML
namespaces are not being explicitly involved here. 
 
This 'GO' namespace would have three different namespaces in it
(biological process, molecular function and cellular component)..and
would cause confusion with the more usual interpretation of
namespaces.
 
-Nigam.