I’ll have a HOW TO and examples soon, but check it out– This is the hidden Gem of Google Earth. Adding a “Network Link” allows you to fetch KML data from remote servers. It does this in two ways, Time Based or Location Based. So *anyone* can add dynamic data to Google Maps. Geotagged Flickr, del.icio.us a more! Link.
“Network Link” – The Killer App for Google Earth