Never depend on a permanent link to be permanent.
Google just altered the Google Maps interface to reset the map center to whereever the query string is set, regardless of any panning or zooming done before "link to this page" is clicked on. As a result, nearly all of my google map links are busted right now. I know what I need to do to fix them but it's going to take a while; there are over 400 probably broken links.
Bleah.