@DecaturNature They are a good choice to block honestly... pao.st is another you might want to get to blocking.
@freemo @DecaturNature how do you block domains?
@yes What system are you using (if not Mastodon)? I know that there is inter-operability between Mastodon and other ActivityPub systems, but I don't know if there's any way to tell who is using what.
@DecaturNature @yes before ActivityPub and Mastodon, there was OStatus and GNU Social. IIRC, Mastodon originally supported OStatus and only removed it when most GS instances shut down.