beteljuice, thank you for pointing out the key words: lacking interactivity - I have found that lack on interactivity all WIKI packages I have tried so far!
Ray (the other Ray), a WIKI is 'stiff', one sided - someone puts information in the WIKI; one searches for information in a WIKI and usually cannot find the appropriate information as the search facilities (engine) are quite limited and the general organization of the WIKI (menus and all) way too restrictive in my views; one then simply gives up looking for information in a WIKI.
In the past, I have entered and/or modified articles in the WIKI - updating an article is somewhat of a pain.
Fortunately, I know the organization of the Cumulus WIKI pretty well and can find my way almost everywhere. But, a few weeks ago, as I could not remember for sure if a certain information I had read about was in the WIKI or not, I searched the WIKI - unfortunately, I never found what I was looking for. The other day, as I was comparing pages from the WIKI with those I had saved on my computer (as PDF files), I found the information I had been looking for ... except the search engine of the WIKI never found it.
The Cumulus WIKI is not alone - the Weather Display WIKI is as bad in providing useful information unless one knows where to look for that information, which really defeat the concept of a storage area where information is easily and readily available...
I have not yet found a good replacement for the WIKI ... Other than having some areas of a forum which are locked (areas where the tutorials are posted), with additional areas which are hidden and with limited access (areas where knowledgeable people can post suggestions and modifications to the tutorials), and finally, open areas where users can ask for assistance but only if they have taken the time to completely read the tutorial.