I've consolidated everything we know about Brian's situation here. It's open to edit, so if you see something we left out, feel free to change/add it. It's got everything (that I'm aware of) up to and including the video. The portion on the blog is pretty sparse, but the blog is long and I don't want to quote the entire thing on that page. Anyways, I hope it helps us find Brian to have everything organized in one location. Just ignore the way I made is sound like a game. That's more of a cover story for random internet people that may stumble across the page.
P.S. I was recommended to another site that is a better for this kind of stuff, but have yet to get a hold of the owner. So the address of the site may change. I'll update this post if it does.