Wiki

What are some of the most powerful educational features of wikis?
They allow students to work on a document collaboratively. It teaches us to allow others to contribute directly to a project.
What are some potential negatives?
I guess that it comes down to management. How to you stay on top of cyber-vandalists?
Do you believe a wiki might be useful in your own learning or your own teaching? How? Why?
Yes, I think that we should use wikis for writing curriculum documents. I have to keep a planner for each UOI (unit of inquiry). This UOI is taught across the curriculum involving many different teachers and having a wiki-based planner would allow all teachers to contribute. Has anyone used a wiki like this in their job?