I, also, have a non-Perl answer. Using recent versions of Mozilla, you can make groups of tabs into bookmarks that go into your personal toolbar folder. Under 'Manage Bookmarks' you can schedule checking for changes (only on a per-bookmark basis, not globally for the whole tab-group) and then make the bookmark blink at you, or automatically open, or some such thing.
in reply to Re: questions concerning using perl to monitor webpages
in thread questions concerning using perl to monitor webpages