Continuing the discussion from Let's spin up scribe.works:
I hadn’t looked into this very much, but it turns out that only admins can turn a post into a wiki. At current volume I would like to not add any admins (because before I do that I want documented guidelines for everyone, especially folks with power). So in the meantime, if you’d like a post to be turned into a wiki, please flag it and leave that as the note. I will get to it that day, most likely. When I start getting lax in that, I will add more moderators.