I am finding this fascinating. I want to know how it works and how much generating for the ghosts' text is going on under the hood, but at the same time, I kind of don't want to know, because that would ruin the mystery.
Would you ever be interested in adding an import function along with the export one currently in there? I often use my favorite software on multiple platforms and this would let me import notes across systems.
I've also noticed many of your programs are similar types of text editors/note takers, and it would be interesting to import the writing from one into the other, and vice versa, to see what differences, and perhaps syncronicities, would pop up.