I'm glad for your clarifying questions. I'm responding to the new group and the certification candidates group, as others may have the same questions. Dominic offered to forward to the cnvc-certified trainers group.
It's a new online discussion group, yahoo-style, like cnvc-trainers and nvccertificationcandidates. That means you can either get each contribution in email or read them on the group web site ( http://groups.yahoo.com/group/emergence-of-nvc), whichever is your preference. Whichever option you prefer, no, you don't have to log to read the messages. I set up the group permissions to be maximally open, except that I restricted posting to members, so as to prevent spamming.
As for how many people will see your postings, I don't know at this point. As I said, anyone who cares about this topic can come and look any time. Moreover, the conversation is archived indefinitely, so our posts will be read by people who don't yet know about the group.
Do these answers help? Would you like to know anything else?
Warmly, - Conal