Ron Gilbert (GrumpyGamer)I hate that you can't link to a Mastodon post without it taking you a different server. It's nuts that those links aren't swizzed on the sever. Always taking me to a different server that I'm not logged into is the Achilles heal of Mastodon. Non-tech users are completely confused by this. It's not their fault, it's Mastodon's fault. I know it's not easy to fix, but if Mastodon wanted to fix one thing keep new users, this is it.
FediThing 
It does parse the links on some apps to keep them within the app without sending people off to a website, but not all apps do this. I'm not sure how the parsing takes place, but it seems to work better for some domains, so I'm wondering if they just have a public domain list they look up from to check if a link is a Fediverse one.