At work we have an internal Wiki. It's just for information thats team specific, i.e. how developers set up their system, common config issues, known problems, project progress, and a few homepages. Admittedly mine is blank, I'll let the team find their way here naturally. However I founf a comment yesterday that made me feel as if I was doing a good job. On Ian Glass's page he has a comment about the use of this. Basically it goes something like this
I used to use this a lot, then I found I could get auto completion with ctrl+space, (well Alan showed me).
As I said appreciated in a small way, but then again he did at least write it down.