I would like to add that this package is a Form Control for Kentico. That means (for those who are not sure where it can be used) that you can use it in the Form tab of a document.
An example would be a document type for a hotel. Editors can simply enter "Hilton Hotel, Rotterdam, The Netherlands" and click the find button on the control, and Google Maps will do the rest. (Note that in the picture above it looks like an editor needs to enter the latitude and longitude yourself, but that's necessary.)
The value that ends up being stored in the database is the latitude and longitude, separated by a comma. This value can than later be used in a Google Maps display integrated in the custom page template or web part.
Thanks for blogging about it Petr!