@simonwoods Yes. An external IndieWeb site can reply to a post on Micro.blog and it will be threaded into the conversation using their domain name.
@manton This is awesome! For those of us with both a Micro.blog account and a (different) IndieWeb-friendly domain, is there a way to link the two identities?
Or does that even make sense in the context of webmentions? Probably not, right? You’d want the webmention going to the specific post, and not necessarily the author.