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What can ActivityPub do that RSS can't?
(lemy.lol)
A community to talk about the Fediverse and all it's related services using ActivityPub (Mastodon, Lemmy, KBin, etc).
If you wanted to get help with moderating your own community then head over to !moderators@lemmy.world!
Learn more at these websites: Join The Fediverse Wiki, Fediverse.info, Wikipedia Page, The Federation Info (Stats), FediDB (Stats), Sub Rehab (Reddit Migration), Search Lemmy
That's most of it. ActivityPub also makes it possible to know who is subscribed. It's very hard to count how many people are subscribed to an RSS feed.
Not really. They're making requests, probably at least once a day. That makes it very easy to count active users. With subscribers, you can have a big number, but they're not necessarily all active, and unless they're on your instance, you can't see how often they're reading.
They're making requests at unknown intervals, often many times per day. Each IP address might represent multiple unique users, or one user might have multiple IPs.
Or back in the days where Google Reader was a thing, one request from them could represent millions of readers.