"Add new post" basically posts a microblog to federated microblogging sites like mastodon from Kbin using your Kbin account. These are presented under the microblog category of the magazine you posted in. "Add new thread", formerly "Add new article" is what gets your post under the threads category.
If an owner of a magazine adds tags to their magazine, the microblog section of that magazine starts aggregating microblog posts from across the fediverse that use those tags.
If you are trying to post a Kbin magazine "thread" from mastodon, I don't think that's possible, as mastodon is exclusively a microblogging site. Adding a tag to your post that's included in a Kbin magazine should get your post to appear in its microblog section, though. Maybe mentioning it as well, I'm not sure.
If you want a Kbin magazine thread to appear as a microblog post on mastodon, I'm not sure that's possible. I've never tried it. Maybe adding a tag could do something, but I doubt it.
Lemmy lacks the ability, yeah. For now, anyway. Kbin seems to have a bright future as a useful go-between for mastodon and forum users, but it still needs some work atm.
• kbin can search for tags and aggregate them in the relevant magazines, but it doesn't currently seem to have a way for users to follow tags yet.
• You can follow other users just fine, but as far as I know, kbin shows their posts in the Subscription feed alongside every forum post under god, so I'm having trouble catching things that they blog unless I go deliberately to their profile.
• Which is also what I'm stuck doing if I want to boost/reply to a specific microblog. I have to search the user if I'm not following them. Kbin doesn't seem to like searching for specific posts, so I have to skim their timeline. And then hope it's even federated. It isn't always, and then I'm SOL.
Still huffy, because I saw something downright hilarious yesterday, but I can't find it on kbin so I can't do anything about it.
So all of that cripples its usefulness a bit for me. I'm still pretty happy to have it, but I can't wait to see it improve.
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