The most active platform at the moment is the #todd channel in the “Network to Code” slack team. This team is free and open to join - just head over to http://slack.networktocode.com/ to sign up, and look for the #todd channel once in.
ToDD also has a mailing list, for all matters related to development, or questions about getting ToDD running on your own systems. Please feel free to join and send a message if you have any questions! We will be as helpful as possible.
ToDD was first released at the Devops Networking Forum in Santa Clara. That talk is viewable here:
I also recorded a video that covers some of the high-level concepts and design of ToDD:
Also, please see the video below for a full demonstration of ToDD in action: