Google has released more information about the new Google Maps Usage Limits. The new information should go a long way to assuage the fears of Google Maps developers.
Only 0.35% of Sites Affected
By setting the usage limits at 25,000 map loads per day Google are minimising the number of affected sites to 0.35% of all websites using the Maps API. My guess is that most of these top 0.35% of websites using the Google Maps API are corporations that should be using a Google Maps for Enterprise licence anyway.
One of the biggest worries for developers (based on many of the questions asked on the Google Maps API Developers Google Group), was what would happen if a map suddenly became very popular. For example, a media site that uses a map to illustrate a breaking news story, or a map that suddenly goes viral.
Google say that usage charges will only apply after a map exceeds the 25,000 map loads per day for 90 consecutive days. This is great news for developers as it means that a sudden spike in popularity for a map won't lead to a large bill from Google.
You can find out more about the new usage limits on the Google Maps API FAQ
Via: Google Geo Developers Blog