long time ago in the 0.7 or 0.8 version of Firefox there was an option for the bookmarks that allowed the user to be notified whenever a web page of the bookmark had changed. Unfortunatelly the feature has been removed. I'm half sure that there was an extension for doing exactly the same, but I simply can't find it. If you its name, I'd be very happy if you give me the name/url. Thanks a lot.