We have ISNI links in our database, but we don't link to the ISNI database. We've been asked (nicely) to link to the ISNI database and I agree that we should do that. Lets change the ISNI text into a link that points to:

http://isni-url.oclc.nl/isni/<isn>

There is a page of documentation at http://www.isni.org/resources