All .kmz files are Copyright by their respective authors. Files are collected from many 
sources and are provided 'as-is' with no technical support offered or questions answered.
I know for a fact that some of them are buggy or the netowrk links are non-functional.
With that said, we hope you find some that are of use or interest. If you have any .kmz's 
that you have collected that you wish to submit you may attach them to an email to 
davidATgelessons.com or upload them with the file uploader available at 
http://www.gelessons.com/kmzupload.html (which is either available now or will be soon).

David