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Wikis are especially useful in distributed projects: many teams around the world use them to organize, track, and publish their work. Their flexibility frees a project manager from fretting about getting everything exactly right from the beginning. A wiki can and should change to respond to the project's needs as they arise. While wikis are always easy to change, wiki engines usually incorporate comprehensive versioning and change control for their content. More important than the particular wiki implementation, however, is being sure that a wiki really fits in the culture of the project or organization. It requires tolerance and openness.
Πάνος Λουρίδας (Wed,) studied this question.