As a technical person, I find wikis are a great tool for collaborating and organizing information. The instantly shared, accessible, revision/version tracked, and interlinked nature of the documents/pages make it a valuable and convenient tool. I can't stand using Word now and try to avoid using it if at all possible.
I am starting a project with a non-technical person and suggested using a wiki to collaborate and capture our ideas. This was met with resistance due to all the 'weird brackets and stuff' and the desire to just 'type normally'. The counter suggestion was creating a folder somewhere to store Word documents in a folder structure with files named based on the date of the revision. I cringed.
So the question is, what is a good tool that provides wiki-type collaboration features with Word's 'ease of use' [sic] (a.k.a. WYSIWYG)?