For this I know the answer. No, you can’t. We can’t even use that inside Mastodon, Pixelfed etc. And the actual answer is this plugin, or ActivityPub in general, has nothing to do with logins.
But it would be nice. But on otherhand — the idea of ActivityPub is exacly remove the need to login on other services.
That is the beauty of a system where there is no algorithm 
. Yes, that is what you have to do, but it works only within one instance. You still need followers.
The widely used analogy of how emails work is true even here. You need someone to send emails, otherwise it would be considered spamming.
I’m decently active in Mastodon, because I said farewell to Meta. I have actually accounts in three different instances. My main account follows my categories and two other follows my main instance account. With that I maximize visibility, and the rest is mercy of other users.
BTW — I have noticed that inability of Mastodon to process markdown and html annoys others a bit.
Is it too early to ask for it to be included in Crowdin for translations?
Good question.
We’ll have to evaluate if this plugin is ok experimental → official. If so, we can add it to Crowdin.
Out of curiosity, what language(s) are you thinking of?
Czech. The reason is that while trying to finish a complete localization I try to go through different Czech forums and see how the translations work (sometimes you see different things because of the data combination that you don’t see on your own forum – different plurals used, different plugins etc.).
And I just stumbled upon one forum that has the ActivityPub visible in the user settings. And I want user settings to be fully localized 
Translating manually is always an option. And right now the only option. It took for me something like max 10 minutes. But sure, if it comes automatically is easier for admins.
Yeah, I think we can add this to Crowdin, I’ll make it so.
Topics go into the big world without tags. Is it possible to add tags from Discourse somehow?
It would need to add used tags into a post, but only for the Mastodon direction, and I don’t know if that is even possible, or really needed. Well, it is needed because tags play such a big role in Mastodon (or everywhere in the federated world, I reckon).
Sure, I could just add #tag, but that is a bit awkward because Discourse has its own nice way of using tags.
@Angus I am curious if there is a way to do this too. Do actors coming from the Discourse plugin have a common identifier (like a source: Discourse type of metadata) that can be searched for in the fediverse? Or maybe there’s identifiers for posts?
Yes, it would be possible to do that. As you allude, it will raise a few questions as tags serve slightly different roles in Discourse and other platforms. It will need careful consideration.
This is related to the tagging question, but goes beyond it too. There are various layers to this. We could implement a Mastodon-specific approach to improving discovery. We could also implement a “normalised” ActivityPub approach to discovery. On the latter front see
But yes, we can discuss further what the short, medium and long term product goals are and I can develop an implementation strategy taking those various layers into account. I’ve gone ahead and raised this with the relevant ActivityPub folks: