Yes.
That is a great idea, small voice in my head. Thank you for raising it.
We would love to see Light Art chapters springing up all over the place.
We will happily, nay merrily, set up a board for any reasonable group / region /club.
Can it be private? Yes, but why? Share the love. I'm hearing Barry White music right now.
Better still, arrange meet-ups in your local area.
Meet-ups are an amazing new concept where you leave your computer (yes, difficult, we know, but for just a little while) and go forth into the local community and meet with people with common interests (photography) for the purpose of communication, sharing of ideas, food and maybe a little fun. It will be OK.
To do this someone (I'm thinking YOU) will need to post a 'meet up' message on the board and I'd suggest maybe a little ad in the local paper.
You are welcome to use our logo. Just ask and we'll provide a print ready version to suit your requirements.
You've heard of the Sundance festival? [
http://en.wikipedia.org/wiki/Sundance_Film_Festival ]
Why not a 'Light Art' festival(s)

Its a local thing.