Amitai Schleier has contributed code to ikiwiki...
...and uses ikiwiki for all sorts of things:
- My personal web site
- A very small podcast
- A major open-source project's wiki (with the cvs plugin)
- An undergraduate group's university-provided-static-hosted site (with rsync and a WIND authentication plugin)
- A small personal site (happily hosted at Branchable)
- A wiki about Agile in distributed teams