They are more of a concept coming from mastdodon type of posts.
But currently there are no lists or possibilities to subscribe to them here.
So you/we can use them and navigate but with certain limitations.
For my liking kbin is lacking lists so that not all follows have to be seen mixed in a single place.
In such lists if they existed it would be awesome that there could be subscriptions to both communities and tags.
True, but I think they make it easier to find posts originating here on kbin using say Mastodon.
There is also a difference between Posts and Articles here which I haven't fully fathomed - I think perhaps articles are more Mastodon compatible, while posts are more aligned with Lemmy... But hopefully somebody more enlightened will provide more detail and/or correct me there!
In some cases, literally mastodon content. If you are on mastadon and you put @magazine@instance in your post, it shows up on that magazines microblog, on kbin, at least.
Hm yeah seems so, so an article can be read on kbin, lemmy, and mastodon... while a post will be in kbin microblog and mastodon but not lemmy? And the other threads are on lemmy too