I was playing around with the popularity plugin results and I found if you look at this...
...you can see that about half of all Dokuwikis have between 3 and 15 pages in their installation.
Why are there so many tiny wikis out there? My best guess is that people install them with the intent to document things but they give up because they get lazy or confused. Or maybe there's just a bunch of test wikis out there that only exist to make sure that Plugin Foo works with version Bar.
Maybe we should promote some sort of International Wiki Page Creation Day to encourage/remind people to flesh out their neglected little wiki installations, or make some video tutorials or something.