So do you have ideas about how a wiki can help us teach and learn?  What about the following:

• How to teach
  • specific kinds of assignments
  • revision
  • peer editing
  • proofreading
  • brainstorming
•  How to create
  • mail merged email messages
  • audio files or podcasts
  • better presentations
•  How to generate
  • better online discussions
  • better in class discussions
  • more interesting introductions and conclusions
• How to find
  • better sources

And of course, WikiTips.