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By-Martin Maps embed a google maps into your blog, allow javascript programming, and Google Maps API configuration. Full customizable maps, flexible and easy configuration.

You may program the way you need to obtain geographic coordinates to put marks or do reverse geocoding, read the Google Maps API tutorials for programming examples

A new functionallity has been added, now this plugin can add a static map on any post directly on add new post. integrated with media upload.

PS: You will need a Google Maps API Key, you should follow the link in the configuration page to request your Google Maps API key.