[ANN] Standard Thesaurus Economics in RDFa/SKOS (tech preview)

Dear LODers,
 
I'd like to announce here a tech preview of the "Standard Thesaurus
Economics" as a RDFa/SKOS application. 
 
The german/english thesaurus
(http://www.zbw.eu/e_databases/e_econis/e_standard_thesaurus.htm)
contains 6,500 richly interlinked concepts. At the German National
Library of Economics (ZBW) and other institutions it is used for more
than ten years to index literature from economics and business practice.

 
As a preview, http://www.zbw.eu/beta/stw contains only a hand full of
concepts (indeed the test set used in the development of the conversion
scripts). Some things have still to be fixed - most notably, the
licensing policy, but also the "user experience" of the web site ;)
 
Nevertheless I would be very happy to get some feedback, especially
about
 
1) the URI design (which can't be changed easily after the whole set is
published)
2) the approach to versioning (preserving the concept's identity but
providing "historical data" for human lookup)
3) the links into the library catalog (which, for the lack of a standard
attribute, are implemented by a custom stw:indexes subproperty of
rdfs:seeAlso)
4) the usefulness as a possible interlinking hub in the LOD cloud
 
Comments are highly welcome (on other topics as well, of cause).
 
Cheers, Joachim