Decommissioning a linked data site

Back in 2009, as an experiment in working with RDFa and linked data, I
created t4gm.info. It is based solely on US Library of Congress library
linked data (specifically, the Thesaurus for Graphical Materials), which at
the time I created the site didn't have any equivalently accessible linked
data. That has long since been rectified by the LoC. So t4gm.info is at
best redundant and at worst potentially confusing.

So what I want to do is shut the site down. But there doesn't seem to be
much if any best practice around doing that, especially when the site by
virtue of its listing with CKAN is part of the LOD Cloud diagram. What I
want to do is 1) delist it from CKAN, and then 2) shut the site down,
perhaps replacing it with a simple web service returning a 410 status code
per RFC 2616. I assume it will be removed from the LOD cloud diagram when
that is next updated from the CKAN data.

Anyone have any suggestions beyond that? Also, if anyone from CKAN is
reading this, I could also use some guidance on how deletion of records is
accomplished through the online interface. - cheers, BPA

Bradley P. Allen
http://bradleypallen.org