Sorry if someone has asked this before, I had a search about in the forums to see and read Jason Cole's book (section on wiki's) but did not find an answer. So feel free to point me to a previously posted discussion.
I tried using a wiki as a class group activity and it did not completely as planned. I realise now that each learner can erase previous entries (although they continue to exist in the history) so overwriting previous content, plus each learner working on the page has to re-edit and re-apply their content if another learner saves the page which causes the page they are in the process of editing to go 'stale'. The system does not handle contension or merge content automatically.
Should I have approached the lesson in a different way in order to get the best of using the wiki as a collaborative exercise? Reflecting on the lesson, I feel that I would have to
1) Organise the starting page with  or CamelCase words and assign groups or individual learners to create connected pages.
2) Set the wiki to type: student ( I had set the wiki to Type: groups)
Any thoughts or suggestions? Size of group 21; Age range 16/17. Course : ICT