It seems like the Google Maps JavaScript API V2 code was not working properly. The issue caused sites using this code to generate errors of all kinds. I suspect many sites use this library and ...

In this post, learn best practices for getting and using your Google Maps API Key as well as the benefits for multi-location brands.

The changes will make it more difficult for people to make custom maps using Google's software, but it doesn't appear likely to mean much to state and local government.