@frimmin people are indeed using microformats, classic docs are still majority of the wiki but mf2 vocabs all documented microformats.org/wiki/microformats2#v2_vocabularies, open source microformats.org/wiki/parsers available, validation tools e.g. indiewebify.me

A lot of microformats activity in the indiewebcamp.com community enabling things like cross-site comments/likes/reposts/rsvps, link previews, autodiscovery, feed readers just beginning development.