Yes, this is very cool! A good example of putting GIS information into the hands of the public in a powerful way thanks to Google Earth and your innovative use of KML.
I've just written a little article about this at the
Google Earth Blog entitled:
City of Portland GIS.
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Frank Taylor - Author of
Google Earth Blog All about Google Earth news, features, tips, technologies, and applications. Also read:
http://TahinaExpedition.com(If you have story ideas, please send me a private message.)