What is the Traveling AT Member Deck ~ Journal ~ Thread?

I didn't want to corrupt a journal thread with my who, what, when, where questions. But I'm curious to what that thread is about. So what's the nature of that thread?

It's not really up to me to comment, it was a brilliant idea by others, but see here for the start of this and here for where we signed up. Good that you asked as any extraneous bits on the journal thread will be deleted I believe !