I really have no response for this, but I'll try anyway. I'm fairly new to the boards, don't 'know' any of you, but I do know there are good, warm and welcoming people here. It's not a common thing to find as far as forums go, I'm a member of a few other bike forums and I would consider them fairly hostile.
That being said, I hope Mark makes a speedy recovery. The reality of people on forums doesn't really hit you until something like this happens, and I genuinely wish him well.