#ActivityPub is super cool once you see it in action.
For instance, you can visit the new StarTrek lemmy server here: https://startrek.website/c/startrek. Looks like a reddit sub with posts, threaded comments, upvotes, &c.
OR you can follow the same server on Mastodon @startrek.
Every thread and comment shows up as a boosted post.
Cool, right? Now, say you find a comment that you want to reply to. Post through your favorite Mastodon app, and that feeds right back to the thread on the #Lemmy server! 🤯
Or say you wanna watch a video on Peertube. You can follow the channel from your Mastodon, watch the video in Mastodon, even comment on it, which then reflects into Peertube. It’s how the web was designed! Everything interconnects! These walled gardens have broken the free and open internet. Let’s fight for it come back!