[Wazza]

The meta:

<link rel="meta" href="http://yourdomain.com/labels.rdf" type="application/rdf+xml" title="ICRA labels" />

And the labels.rdf file is 2kb

I think we can manage both of these...

I'm not certain if "register" is the correct term either - I'm fairly certain that the 30 second process it takes to get the tag and file is to make sure that the correct values are inserted in the correct places.