Copyright is one thing. Another is to make such publish reliable, unitl you want make something for only small group of people. You should have science editor who should check all the informations to prove the author wasn't gone wrong. Please remember, we all have knowledge from very different sources. Some of them are from know or less known books, and aren't forum members authorship, but some of them are our and only our conclusions - there is a need to differ between those two and make appropriate notes. So I think that publish something from the Forum as it is, is quite impossible and dangerous for our reputation - don't get me wrong! Until we talk here everything is ok, but when you publish something even smallest error will be noticed and enhanced against us by critics.
But it would be good to gather us around some small periodic and publish some materials written as separate works by our members. Not forum texts but brand new written by exact members. Of course there is need of money, editors... etc, too, but then every author takes his responsibility for what is written, then would be a possibility to present systematic works, etc.
So the idea is brilliant but I would prefer to find other way then just gather internet texts.
In my case I used some of the thoughts from this forum on wider audience. I used mostly overall thoughts (many from know books I don't have, but quoted here) and only some of the individual conclusions, but I sent the emails to everybody involved with request of permission to do that. If someone wanted to stay in the shadow, I respected his decision.
And to be truth, I download some of the threads and I'm often returning to them refreshing my knowledge. I found this great forum very helpful so far and I always appreciate your comittment especially on my items

especially when some of the informations are just unreachable for me. So let's work further and more!!!
Best
Michal