@reiver@mastodon.social yes, although this is not well supported. I accidentally federated out a note with a timestamp in the future and it caused Lemmy to pin my note to the top of the recent posts list

@x_tof Interessiert in @Duesseldorf niemanden.

@CWSmith hashtags in NodeBB are only relevant at the topic level — that's just how it was designed years ago. You'll note that on microblogs, tags can be added on any post. While we show them, we don't consume or index them unless they are the original post. When you use tags in NodeBB, they are federated outward with the original post. Hope that helps!

@scott@loves.tech can you share an example of a group actor from Hubzilla? Would be interesting to see how that's handled. Likely it wouldn't work properly because categories in NodeBB don't author posts. Do your group actors send creates on behalf of regular users? That might work ok. Lastly, there's no requirement that a NodeBB category be mentioned. It only needs to be addressed. A mention is the easiest way to do that because you addressing is abstracted out of the Mastodon UI. But for things like PieFed, Lemmy, Mbin, and likely Hubzilla, you're able to change addressing based on where you create the post.