I have been posting on my experience in promoting the use of social software in my organisation.
The question has always been, “What application will it be used for?” There has been some interest in using it as a knowledge base for IT Support staff. However, it transpires that the knowledge tool integrated with our help desk product has been marked for future use. So that has put paid to the use of a wiki here.
As a result of pushing these buttons though, I (along with 2 colleagues) have been tasked with defining what other types of information/knowledge we need to capture – and where we currently capture it. So there may be a use for a wiki here. In fact, I have created a wiki for use in doing this gathering work.
If my experience were to be the rule: the answer (as to how to introduce wikis) is to isolate the use of the wiki to the level of the user base already sold on the idea and work from there up.
One step backwards, another forward.