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How we make these cool maps

Making these maps is actually pretty easy for a competent programmer. The two main tools are the free Google Maps API which plots a latitude and longitude that you supply, and our own Zipwise Geotargeting Database that lets you look up the latitude and longitude of a visitor's IP address.

When a visitor comes to our web site, our server takes their IP address and searches the Zipwise Geotargeting Database to find their latitude and longitude.

Once we have the visitor's latitude and longtitude, it is passed along with the 100 other most recent visitors' coordinates to the Google Maps API. Using the JavaScript that is part of the Google Maps API, we then display the map on the web page.

Learn more about the Zipwise Geotargeting Database to see if a tool like this would make sense for you.