In this article I found a lot of useful information on how the author tried to get other teachers to use Wikis. I think we can definitely use this to give an example of how we can get a department on board with using Wikis.

I used this in my narrative to show an obstacle to implementing a wiki in the classroom

I found this link through the 'Wiki in the Classroom' resource you provided. It seems to have a ton of valuable information and links to a lot of different pages. I am going to look through it to see if I can find a few things to use.