The mailing list of the Niantic x RIT Geo Games and Media Research Lab provides a space for resource sharing, communication, and community building among geo games researchers, and practitioners.
The list is open to anyone. Posting to the list is lightly moderated to avoid spam, irrelevant posts, and subscription queries. The list is archived and searchable on the web.
You can access the list here: https://www.jiscmail.ac.uk/cgi-bin/webadmin?A0=LOCATIONBASEDGAMES.