I've been trying to integrate my SMF forum with Dokuwiki for -years- but upgrades to both have made this an increasingly difficult task.
Cheerfully, I discovered last night, there's a plugin for this:
It doesn't seem to be referenced here at all, and only once on the SMF forums, so it was devilishly hard to find. I was unable to work out how to add it to the wiki here... But yeah.
Now you know. =)