With ActivityPub protocol being accepted a W3C standard, I don’t see a reason why a self-hosted blogging platform wouldn’t implement it.
Implementing ActivityPub in Ghost will bring following benefits to its users:
- it will interconnect all Ghost instances into a cohesive network - self-hosted instances will no more be lonely places!;
- it will allow Ghost to become a part of a wide social network of free and open-source self-hosted applications (like Mastodon, Pleroma, PeerTube, Plume, Hubzilla, Misskey, soon Pixelfed, Write.as, GetTogether, Aardwolf, GNUSocial and Friendica and a lot of others) known as The Fediverse;
- Ghost itself will become more popular in consequence of 1 and 2. Mastodon alone brings at least 1000000 (a million) of users with its at least 4801 instances (as seen on https://mnm.social/).
Come join the fun!