E.g. http://musicbrainz.org/artist/2da1703c-c278-4487-9da5-a5ad799ffbb7.html (old mason URL) redirects to http://ngs.musicbrainz.org/artist/2da1703c-c278-4487-9da5-a5ad799ffbb7 This is problematic because sessions are not shared between mb.org and ngs.mb.org (e.g. you're logged on one but not the other)