What can be an Actor? And what should not be an Actor?

[trwnh]

@bhaugen

what happens when they try to federate

This is up to the implementation. I imagine messages that aren’t understood will simply be dropped.

@bhaugen

Any recommended “standards” or commonly understood rules of thumb for what should and should not be an Actor?

if it can perform an Activity, it is an Actor. Actor is required to have inbox and outbox, per https://www.w3.org/TR/activitypub/#actor-objects

@bhaugen

For example, should hashtags be actors?

Probably not – you’d probably want to pursue “Following non-actor objects” from Unresolved issues surrounding Follow activities and the surrounding discussion.