Someone just sent me a very angry DM because their replies to my #Akkoma posts (I don’t use Mastodon) showed up on #Piefed.

So let’s clear this up. When I tag a Piefed community like @movies@piefed.social or @videogames@piefed.social, your replies automatically appear on Piefed. On Piefed itself, the @ is swapped for a !—that’s how communities are marked.

That’s not a bug. That’s ActivityPub doing what it does best. Almost anything you post on Mastodon can show up elsewhere on the Fediverse.