Given the shared underlying protocol, I didn’t like that if I saw something interesting on Mastodon, and wanted to post it on Lemmy, I’d have to screenshot it and/or re-attribute it to me rather than the original author.
Tails is an experimental community. Instead of announcing just what a Lemmy user has posted, it announces what a Fediverse actor has posted. This means that, so far, it’s featured posts from Mastodon accounts like Mr Lovenstein, warsandpeas, George Takei, Low Quality Facts, and other interesting people. Lemmy users have been able to reply to the author, and have also replied to those other Mastodon accounts that responded.
You can see for yourself at !tails@lemmon.website
(the usual rules apply: if you’re the first person on your instance to do this, you’ll likely get a blank screen or an error. Wait 10 secs or so, press refresh, and you should have it).