I was curious about whether NB or Note was more common in a codebase I was working on, and that was fairly simple to see:
git grep NB $DIREC | wc -l
However, then I wondered whether different people used NB or Note, so I tried
find $DIREC -type f | grep -v '/\.' | xargs -n1 git blame | grep...
these are my favorite types of blog posts