@ted The Place and Event parts of ActivityPub would work, but I'm not aware of any other implementation using them for anything, are you?
Not aware of any widely used AP implementations that use locations, events, etc. but I think Nextcloud@mastodon.xyz is heading in that direction.
Also I think objects can be (or contain) multiple types so an event could also be a note which Mastodon could munch on making for interesting ideas to spread announcements? My AP knowledge is limited though.
@cwebber is a busy person but a good person to bounce ideas off...
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