[quote=@catchamber]
<Snipped quote by ArenaSnow>
You could assume that, but the Persistent World would serve as an easily accessible repository for all of that information. The Closed threads would just be your way of publicly roleplaying events that take place in a specific portion of the infinite universe. If they wanted to, other people could make a divergent version of what transpired in your Closed thread, or they could request to be allowed to participate in its development.
[/quote]

All of which can be done with existing forums, with connections that can be made, if people really wanted to, between GMs.