I teach computer science at Austin Community College in Austin, Texas. I have been using wiki systems since I first ran into Ward's book back around 2000. I have been working on my own wiki system for several years, largely based on work I completed at Texas State University while pursuing a master's degree in Computer Science. My personal wiki has seen use as a tool for managing my consulting business and in my teaching.
I plan on converting my current markup (largely based on Ward's book) to Creole since this seems like a good base for standardization of what is rapidly becoming a chaotic mess in wiki-land.
You can contact me for information about my wiki system.