Paul the other way you can keep the two groups separate is by creating two different channels. Both services allow you to do this although YouTube has better privacy settings.
Wow, that's some cutting edge stuff, much more so than what we work with. I think if properly implemented, Google glass will have good potential. I'm already envisioning it being used in medicine whereby vitals/labs are presented to the physician during rounds or an operation checklist to a surgeon during a procedure.
I got into NV one day late due to work but drove in during a great sunset so tomorrow should be a great day to hit the trails yet again. Now I'm lounging and eating what I want to before I'm told what I can't later tonight. Anyhow, I filmed the last 100 miles coming in. Where the video is slowed down, you can see the NV highway patrol officer pointing a radar gun at me with one hand and telling me to slow down with the other.
http://vimeo.com/88554142