So I'm working on a small React.js app for my consultancy and I decided to add some release notes that are viewable while looking at the page. Being all fancy I decided to add Markdown support for it.
Then all of a sudden it hits me, that extra download size (about 50kb, it's not light) can be used elsewhere too. This app has a notes field, and it was totally trivial to support Markdown there also! Win/Win! Makes that extra bandwidth worthwhile (not that I'm paying for it, but still...).