I think the overall question is what problem is the wiki a solution too, and is it the best solution? What information is the non-IT user really having to diss

I think the overall question is what problem is the wiki a solution too, and is it the best solution? What information is the non-IT user really having to disseminate to others? What value is it truly providing? How have you made adding the information to a wiki not be additional work? Is it improving productivity or reducing it? And finally, who has ownership of the project? If you do not have a non-IT owner it'll 'gather dust' if the value of the application is not easily perceived.