[mb-users] Release Relationships

I would like to associate a URL with a release.  The URL is that of the 
release publisher.  I have entered it under "discography" as the least 
worst fit.  Just wanted to see if I was missing something.  Is there a 
better place to add the relationship?  Is it unnecessary? If it is the 
current best place, would it be worth trying to add another type for 
"Publisher"?  Here's the current Relationships page I am referring to:

http://musicbrainz.org/release/6172afe2-1dfe-467c-8284-ec2810b16db9/relationships

dowen