I continuously received one of the following errors:
Google has disabled use of the Maps API for this application. See the Terms of Service for more information: http://www.google.com/intl/en-US_US/help/terms_maps.html.
Having not used the API to make a single call, the notion that I had somehow violated the Google TOS was particularly infuriating, as was the notion that I had not enabled the Google Maps API, which I had done, as outlined in the API Tutorial:
The issue, at least in my case, turned out to be the sample code that Google provides in the same tutorial. The sample is as follows:
In the script above, the developer is prompted to replace API_KEY with their actual API Key. However, this will cause a TOS violation if you have followed the Tutorial. To resolve the issue, add the following to your API Key:
So the entire line of script, with an actual API Key, would look something like this:
This will allow the map to render as described in the tutorial.