The miss log is a self-writing roadmap

Once your site can say “I do not know,” something useful starts happening in the background.

Every unanswered question gets written down, in the visitor’s own phrasing, which is almost never the phrasing you would have used. That list is a content roadmap you did not have to research, sorted by real frequency rather than by what you assume people wonder about.

Then it compounds: you answer one, and it is answered forever, for everybody who asks it afterwards. Your customers are writing your curriculum, and the only thing you had to build was the humility to log the misses.