On his Blog Micro Persuation Steve Rubel asks an important question. I think we need resolvers like this to solve the problem:
where purl.oclc.org and purl.rssloop.com are resolvers for /RSSLOOP/test/. Your browser will have to know what purl resolvers are but this is not hard to do. So even if rssloop.com is sold all links can be moved to a new domain without a problem. Just tell the resolvers where /RSSLOOP/test/ than has to point to .