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Wiki Deal

I was impressed by the Wikis. Is this something 3-4 educators could be using to develop a document with lots of pages and some pictures? I have a gaziion versions of some documents on my computer because we're going back-and-forth with edits and revisions. I know I'm taking up space on my computer but hate to delete everything until the document is FINAL. Would it make sense to put the document on wiki until we're done with the revisions?