Another really big concern I have is that activity pub by definition shares all your posts with any instance that hosts your followers. So if you have a mastodon follower on FB’s activity pub/twitter replica, FB automatically gets your data even though you don’t use it

Another really big concern I have is that activity pub by definition shares all your posts with any instance that hosts your followers. So if you have a mastodon follower on FB’s activity pub/twitter replica, FB automatically gets your data even though you don’t use it

The type of things they get are

1. Your profile
2. Whatever you post
3. Who interacts with your posts