Up until recently, Google Maps mashups have been limited primarily to maps with up to about 200 points, limited line data, and overlays of static images. The Google Map Creator is a freeware application designed to make thematic mapping using Google Maps simpler. The application takes a shapefile containing geographic areas linked with attributes and automatically generates a working Google Maps website from the data. It does this by pre-creating all the necessary files and saving them into a directory. Publishing the map on the web is then just a matter of copying files onto a web server, allowing Google Maps to be used with the majority of ISPs.
Google Map Creator offers promising new opportunites for professional-grade mapping via Google Maps mashups.