This is a question about exporting, but what about a simple "share" feature?
According to this news story, you can now share Google Maps on Google Plus. Google also has a support page with instructions on how to share Google Maps locations and results. Another Google support page even has information on how to allow collaborators to edit shared maps.
It appears that the Lists feature, just launched in 2017, now allows you to share your stars with friends.
See this post for more information.