is https://ghost.org on #ActivityPub yet? 😅
I can't resolve it in a client.

Seriously I've been hearing about #Ghost supporting ActivityPub for awhile now.

Or, even though ActivityPub does not in general require WebFinger, is Ghost on WebFinger?

Please reply with a URL hosted by Ghost that is retrievable using ActivityPub and/or resolvable in Mastodon. 🙏

AFAICT none of the URLs on Ghost are retrievable as ActivityPub Objects.
https://www.w3.org/TR/activitypub/#retrieving-objects

(I want to be wrong!)

I think you're hitting their marketing website instead of their ActivityPub server.
@thisismissem Could be. But I'd also expect URLs like this for Ghost Authors to be resolvable in AP Clients and/or Mastodon. https://blog.identity.foundation/author/dif/
Decentralized Identity Foundation - Decentralized Identity Foundation

DIF is a non-profit org that facilitates IPR-protected co-development in the decentralized identity space. It produces open-source code, pre-standard specs, market collaboration, & documentation.

Decentralized Identity Foundation
@[email protected] yeah, I think Ghost hasn't quite figured out that making your URLs loadable via AP is table stakes for full fediverse integration.