I have something from the fediverse to add to @jack 's post here: View quoted note → This positive attitude about building stuff is really great to see on Nostr and it does not exist on the fediverse at all. Since most ActivityPub implementations are heavy it's unreasonable to expect most users to self host. So people tend to gather into communities based on their chosen instance (think: website they are actually using). The different AP implementations really only work together in spite of each other, and there's endless drama about what your chosen AP software says about you, be you a contributor, administrator, or just a user. For example, here's some hilarious beef I saw today between Mastodon instances. The instance mastodon.art is notorious for blocking an absurd number of instances, to the point where artists looking to get commissioned work should really not post there. They wrote this blog post about how they are defederating from another growing instance because they implemented text based search (for public posts) and a few other less important complaints:

Curator

Defederating from Universeodon

(This, and all post on this blog, are for the members of mastodon.art. This particular post has received unintended broader audience, but...

You heard that right. This is about the indexing of publicly available posts. As though it's some kind of terrible harassment tool. Remember that ActivityPub supports followers-only posts and follow approvals. Consider also this instance is for artists, who WANT to be found. That's just drama between Mastodon instances. When it comes to the other implementations it gets even more insufferable. ActivityPub is a protocol like Nostr, but people building on Nostr actually like each other. Celebrate that.