The wiki is for general documentation, knowledge sharing, etc. for the workshop.
This is a a place for resources to persist. Teams will write up / document their projects on the wiki.
See especially:
The wiki will be private (closed to signups and only account holders can view/edit) during the workshop so we don't have to worry about sharing permissions: if (as we hope) the workshop is successful, we will migrate content to a more persistent public-facing wiki (and edit confidential information as necessary).