When I visit kbin.social, I see new posts regularly. On other servers posts stay on the frontpage for multiple days. This is also true if I switch their sorting to “hot”. So that is probably not the difference.
What is kbin.social doing differently?
Wow did not know that. So how can it interact with the lemmy instances if it’s not running lemmy software?
Not only can this Reddit talk to that Reddit, it can also talk to the various Twitters, and YouTubes. Twitter can also talk to Instagram, Facebooks, and Goodreads, etc. That’s the magic of the fediverse!