Just my 2cents:
I do agree on the 'feelings' behind these posts;
It is definitely true that a lot often depends on the 'tone' of how things are said or paraphrased.
Fortunately I am 'computer savvy ' enough to find my way around (most of the times).
Having found myself in most of these 'recognisable' positions creates a lot of understanding and goodwill.
Until now I have not really been into using a wiki, more precise mediawiki.
I have much more, as a user, used the SMF forums around on various projects.
What are my findings:
I agree that most, if not nearly all can be found in the wiki.
I also agree that more than often it is not obvious to find what you're searching.
I think it shouldn't be more easy to use google to do a general web search instead of using the search facility of the wiki.
This needs some more explaining:
I tend to think as a wiki as a book, maybe a book under way of being written.
When I use a book as a knowledgebase or technical document, I very often hop from chapter X, paragraph 2 to chapter D, paragraph 28 e.g. In order to do this I have an index at my disposal in the book.
When I 'read' the wiki, this index is what I'm missing most.
Having installed mediawiki on one of my servers, I have deliberately observed several wiki's (most mediawiki type) and have been able to distinguish several sites where the left part column is used as an analogue 'index', making it much more easy to navigate through a wiki. I have also encountered posts indicating that it is not so 'easy' to use the left column in this sense. At least it seems to need some digging into / studying of how to do this. But it is possible. (If I come accross good examples, I'll add links to this post later, unfortunately I have not bookmarked them.)
As for the forum:
I found this tool for SMF forum: Tagging System For Topics
I have not seen a SMF forum using it yet, but I have generally experienced that the usage of such 'tags' can be extremely rewarding and handy.
I don't even know if this mod is compatible with this SMF forum, but it seems fairly up to date.
There seems to be tagging possible at user level and at administrator level.
It might be an option to start using these type of tags to 'categorize' and bring more of a structure in the forum?
Another suggestion might be the usage of the freemind extension on the wiki.
Throughout my daily activity, personal as well as professionally, I rely heavily on all kinds of mindmapping capable tools. Lately I find Freemind very up to par.
It seems there is a wiki extension which allows for Freemind maps to be used inside a (media)wiki.
This would allow to set up links to various points either in the forum or in the wiki.
The Freemind mindmap allows then for folding / unfolding of treelike items, thus functioning as an easy searcheable index system.
It would also allow to use e.g. one Freemind mindmap as a FAQ, allowing for easy shuffling (if required later on) of items inside a defined hierarchy.
Just suggestions. Always prepared to help the project where possible.