From Wiki
The Google Earth Visualization project aims to allow the generation of [Google Earth|http://earth.google.com/] placemark files out of user data.
The [Google Maps API http://code.google.com/apis/maps/] geocoding service is used to resolve addresses to coordinates, make sure you read the [Terms of Service|http://code.google.com/apis/maps/terms.html] before using this project.
The Samples page contains sample output produced by the application.
