Wiki or Pingdoc?

Today we have been aquainted with two different tools for collaborative writing: KI Commons (a Wiki) and Ping docs (in Swedish) (a shared document in the Learning Management System Pingpong at KI). The two tools have their own pros and cons.

KI Commons is a tool that allows for for collaborative work, working on a shared document and share and develop information. The drawback is that the document cannot be collaborated on simultaneously by two or more participants.

Pingdoc is similar to the Google Docs/Drive service, i.e. a document that allows for simultaneous collaboration where one can see the other's/others' writing in real time. Its drawback is that the ability to edit the text and work.

How would I use this with students?
All depends on what the assignment or purpose would be - the basic question is: is simultaneous work needed? If yes, then possibly Ping docs, but I'd recommend Google drive. Otherwise the Wiki offers many nice features.