I am a big fan of Commoncraft who do excellent small movies to explain technology to dummies like myself. I was browsing through some of my old posts and as I was asked about a wiki - thought that I would repost this useful video of what is a wiki.
I'm a big fan of wikis to use on small scale projects and feel that they can assist with the creation of a high performance workplace by improving communication and also because as I have cited before, these will be part of the IT plumbing. The main issue for me that it isn't that the plumbing is there people have to be shown how to use it but also understand some of the more advanced functionality to get the benefit.
I was talking to an old colleague the other day and he advised me that he was talking to an IT manager who had found by accident that younger employees where using a wiki that was hosted externally to the organisation because the firm had not allowed them to trial an in house wiki. By encouraging people to link people start networking internally and can aid each other as well as tapping in to and learning new knowledge.
Anyway I hope that if you haven't used a wiki, this will encourage you to try. If enough people reply then maybe there is someway we could trial a wiki on a KM subject or anything else that takes your fancy.