Replacement for xml@gnome.org mailing list
Unfortunately, GNOME has shut down all mailing lists, including xml@gnome.org. The "replacement" is a Discourse server which allows some interaction via email. But this requires to create an account which many users will find unacceptable. I'd love to have a mailing list, at least for announcements, but apparently nobody reads these announcements anyway. Thomas Krichel offered to host a mailing list on lists.openlib.org.
Feel free to add your thoughts as comments.