A problem in getting people in corporate silos to communicate is that they do not speak the same language even when they are talking about the same thing. Mapped folksonomy can bridge the language gap. The trick is to have people participating in the folksonomy label a good number of the same underlying things so you can see how the labels correlate across participants.
D. Millen, J. Feinberg, and B. Kerr. CHI '06: Proceedings of the SIGCHI conference on Human Factors in computing systems, page 111--120. New York, NY, USA, ACM Press, (2006)