Use a wiki if you want/need to:

• Publish a range of documents and files in one central location and let others manage those documents with a minimum of effort, lag, and risk of redundancy

• Manage and organize meeting notes, team agendas, and project calendars  

• Central location where shared documents and other files can be viewed and revised by a large and/or dispersed team.

Consider a different PM tool or implement extensions to your wiki if:

• You need to use complex file formats

• You don’t have a team member who can take responsibility for its use and organization

• Peer review is not the best solution for content management on this particular project

• You’re looking for an exchange of views. Wikis are not the best tool for airing opinions or carrying on conversations.