It's no secret that the Google Maps API is incredibly popular. Our directory lists over 2,100 Google Maps mashups, but that's obviously just a subset of all the sites powered by the mapping Platform. And now we know how many sites that is. According to Google Developer Advocate Mano Marks, there are 350,000 websites incorporating Google Maps. And, of course, Google now has many other geographic APIs.
Marks spoke at the North American Cartographic Information Society annual meeting about Google's new mapping technologies. Among the APIs on display were Google Fusion Tables and Google Maps Flash. Marks spent significant time showing the power of Google Earth, including how it interacts directly with Google's Elevation API.
You can find Marks' post from the talk and see his full slides embedded below.