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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[–] INeedMana@piefed.zip 17 points 2 days ago* (last edited 2 days ago) (2 children)

you can't access Mastodon

Small nitpick. Lemmy communities are present on Mastodon and can be followed and replied to by Mastodon users. One can see a comment written by someone from Mastodon. We only can't follow a Mastodon user or Mastodon tags from Lemmy

Example: https://mastodon.social/@VoxAliorum@lemmy.ml/115167313865117114

[–] gedaliyah@lemmy.world 9 points 2 days ago

Also a Mastodon user can follow a Lemmy user.

The replies will federate but not the threads. So for example, the Mastodon user will get notifications about replies to their comments and the Lemmy user will get notifications of the Mastodon user. However, the two users will see the conversion displayed quite differently, especially if there are more than two users in the conversion.

[–] VoxAliorum@lemmy.ml 2 points 1 day ago (2 children)

https://mastodon.social/@VoxAliorum@lemmy.ml

Is this a real follow or is this just a redirect? It redirects me to my profile.

[–] INeedMana@piefed.zip 5 points 1 day ago (1 children)

For some reason if you copy the url when on Mastodon.social and paste it into browser it redirects.

If you want to see this community on Mastodon, go to some mastodon server, search for fediverse@lemmy.world and scroll down. You will find your post with our responses etc

[–] VoxAliorum@lemmy.ml 3 points 1 day ago

Thanks. That worked.

[–] Ludrol@szmer.info 2 points 1 day ago

It is a copy of your real profile from lemmy.ml that users on mastodon.social can interact with. Those interactions are then copied to lemmy.ml