Jim, that was my first thought. But then I wondered if I could go direct, so I wouldn't need to maintain a separate MarkDown document for Sketchucation, and a duplicate HTML document for distribution. And any updates to the SketchUcation site would be visible to people who had the plugin, but maybe hadn't seen or downloaded an update.
Gabor, thanks for considering a feature update, and for confirming that it isn't currently possible.
I'll do what Jim suggests in the meantime.