GinkgoMaps are licensed under the Creative Commons Attribution 3.0 License, which only requires the user to link back and cite the GinkgoMaps project.
So far, tracking offline usage of the maps, e.g. in print products, is difficult.
Maps are an essential part of our culture, science and education. Maps shape the way we experience our world and they are a great way of quickly illustrating and communicating spatial information. Still the usage of most the maps found on the internet is restricted by copyright.
So the GinkgoMaps project offers free maps for everybody to use in whatever way it contributes to their lives, education or work.
GinkgoMaps are already used in a variety of ways, e.g. as icons and graphics on web pages to illustrate geographical places and as large-scale design elements in print products.
All maps are rendered using the Generic Mapping Tools (GMT) in a combination with several other unix tools.