If anyone wants to see a talk I did on #ActivityPub, @manyfold and #Federails, here's the one I did at #LRUG in October (and also at #OggCamp the day before):
https://makertube.net/videos/watch/425d9267-2bb9-48bf-ac60-eeecfb78ab5d
@sfermigier @manyfold good point! They're at https://floppy.org.uk/activitypub-talk/