Old post, but in case it's still useful, Mbin's been working great as a bridge for propagating posts between services from my experience. Lemmy can fetch posts from thread-based instances pretty well, but on other things, Mbin feels the gap, like having from what I can notice an easier time tracking Peertube, its boosts allow propagating pretty much any posts to microblogging platforms, and being able to follow users, their posts (either from threads or microblogs) get tracked automatically, no need to look for the post's link on the search field.

[–] Docker@lemmy.world 1 points 1 week ago (1 children)

So my lemmy post got federated to brainbin ??? How can I connect my lemmy account with my brainbin account ??

[–] Auster@thebrainbin.org 1 points 1 week ago

Lemmy.World federates to potentially any platforms as long as they also use ActivityPub and are not defederated/defederating. However, compatibility may vary, and some rather sporadic cases from some tests I did outright wouldn't work.

And to my knowledge, it's not possible to connect accounts for them to behave like one. What is is having your accounts in different services follow each other.

Mbin, Peertube, Misskey and Mastodon allow that from my experience. I would presume other microblogging and video platfroms allow that too, though still have to test them.

And just in case, to clarify, Mbin (software) tries to act as a mix of threads (like Reddit) and microblogging (like Twitter and Facebook). The/Brain/Bin (my main instance) runs on Mbin software. Lemmy is focused as a threads platform, but you can't follow users directly there.