Unassigned keywords

I’m a fan of using keywords to aid in searching for pages of interest. However, I’m not so meticulous about always remembering to add keywords to every single text page that I write. So every once in a while, I scan my pages to see if there are any cases where I forgot to assign at least one keyword.

What do you think of the idea of automatically assigning the keyword “unassigned” to pages that don’t have any manually assigned keywords? That would make it easy to find all pages with unassigned keywords.