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Re: (Score:1)
Except RSS 2.0 is in torpor now and will never change.
You could of course specify an extension element in a new namespace. Then you’d have to go through the trouble of convincing a lot of people to support your extension.
Or maybe you just want Atom [atomenabled.org], where
<link rel="related" href="http://example.com/" />is part of the spec out of the box.