Marty writes up some of the variety of implementations here https://martymcgui.re/2020/07/15/what-we-talk-about-when-were-talking-about-webmentions/ https://mar

Marty writes up some of the variety of implementations here https://martymcgui.re/2020/07/15/what-we-talk-about-when-were-talking-about-webmentions/ https://martymcgui.re/2020/07/15/what-we-talk-about-when-wer... (which I saw because he webmentioned my in it).