PURL URIs for RDF-S and OWL Vocabularies

Dear all:

Are there any strong opinions in favor of or against using PURLs 
(http://www.purl.org) for serious ontology projects?

I was glad to find respective recipes at

http://www.w3.org/2001/sw/BestPractices/VM/http-examples/2005-11-18/#purls

but would like to know what other think on moving a non-toy ontology to 
the purl.org space.

Best

Martin

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martin hepp, http://www.heppnetz.de
mhepp@computer.org, skype mfhepp