A community that helps people stay up to date with things going on.
The short version is that beehaw was struggling with the (currently) limited toolset available to moderate user content, and they saw a heap of users posting things they don't allow on their instance were coming from the two other big instances, so it was more effective for them to defederate to try and stem the tide.
I imagine regeneration will occur in future when the lemmyverse stabilises a little, and when better mod tools are available
beehaw.org blocked lemmy.world. which works like you'd expect blocking someone would work. they can't interact with each other, can't participate in each other's communities, etc.
So why do I still see posts from them in my subscribed feed?
lemmy.world still "has" content from beehaw before the block happened. you can still see it and interact with it, but anything you do on beehaw communities that you have copies of won't get synced to beehaw, and thus can't be seen by anyone else on the fediverse.
you shouldn't be getting new posts from beehaw at all, other than comments inside of non-beehaw communities (such as in a kbin magazine where a beehaw user comments).
I get a lot of new still from beehaw
yeah that's definitely odd. I wonder if lemmy.world is getting the content from a different federated instance?
can you post in the thread? and if so, can beehaw users respond to you? I wonder what's up...