Hey, I am currently trying to understand a bit better what the Activity Pub allows and what it doesn't as I am preparing a presentation on that topic.

On Lemmy I can join other servers without having to recreate an account. Does that also work for across Activity Pub supporting software? Could I join a PeerTube page and then post there? Could I upload videos? Could I join Mastodon or Pixelfed and post images?

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[–] lgsp@feddit.it 13 points 1 day ago (1 children)

With lemmy account you can only join "groups", so other Lemmy communities, or equivalent piefed or nodebb.

With a Mastodon account you can also join groups (Lemmy etc), but you can also follow single accounts from any mastodon, pixelfed, peertube etc instance.

Why then having a Lemmy account? The interface, how you see the posts, depends on the software. Lemmy is reddit-like, mastodon is twitter-like etc

If you want to upload your video to a peertube instance, then you need an account on that instance

[–] Infrapink@thebrainbin.org 5 points 1 day ago

Also, mbin allows you to follow individual users as well as groups.