Wiki vs forum

[Tony LEE]

Yes, you are right for topics that don't require personal interaction. Describing things objectively. No subjective stuff.
Example is topics wanting to list camping spots willy-nilly. Useless because updating isn't possible except by writing a new post. The other way - more or less a wiki - is like iOverlander has for points of interest useful to overlanders. If you look up a place you know it is the most up to date record available and you know the date as well. If there is nothing there, sign in and put something there. If it is no longer there, mark it closed. Dynamic, so can be current.

Question will be have you got the resources to manage many independent wikis because although someone can add or edit, and those changes do go through immediately, someone with authority (and knowledge) needs to keep an eye on things and review each change before confirming or rejecting it.

Worth considering