Footnotes (sometimes they cross several pages) are very common in linguistic literature. Is there a suitable markup for it in Markdown and should we use it actively on this site? It would certainly add to the flavour of the place.
As both a sometimes-prolix writer and user of LaTeX, I appreciate software that makes it easy to typeset footnotes. But I don't think that such a thing is needed here. Most (some might say all) answers won't benefit from footnotes. It is possible to do footnotes manually if you really want, like this.1 So, I don't think we need special markup for this.
What's more, it looks like this feature request was already refused up by the SO developers: see discussion here
- For example