The are two mailing lists you can use to discuss the Tryllian ADK:
The ADK users mailing list is for users who code with the ADK or who administrate ADK-based applications. The Tryllian ADK developers and the Tryllian hackers who are creating applications on the ADK are all subscribed to this mailing list.
The ADK devel mailing list is for people who work on the ADK itself. This is also the mailing Tryllian developers working on the ADK use to coordinate their development.