I just re-read Welcome to SocialHub for the first time probably since I joined here, and this is the first paragraph:
SocialHub.ActivityPub.Rocks hosts ActivityPub free software developers and enthusiasts to study and share knowledge, specify functionality together, steer the course of ActivityPub W3C Recommendation through code, conversation, consistency, cooperation…
If that’s still valid (sometimes these things evolve over time and don’t get updated), I’d revise my definition!
Every person interested in free software ActivityPub implementations, including developers and non-developers, who agree to the code of conduct.