The most unfortunate feature of Mastodon is that you can't see many posts outside of the instance that you're on. Not such a big deal if you're on mastodon.social with most of the other people, but it's brutal if you're elsewhere. Possibly a value-killer. GnuSocial seems to handle this better? I'm not certain about the parameters of the behavior in either case. @Gargron
@sonya I'm on a completely different instance, but your post here still showed up on my federated feed. I'm not sure exactly how it works, but clearly something is getting through.
@Terrana top-level posts seem to federate well, it's replies that only show up per-instance, if I understand correctly.