saturnø 🐹 is a user on octodon.social. You can follow them or interact with them if you have an account anywhere in the fediverse.
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Some things I learned about the Mastodon web UI:
The profile page of a user on another server won't show all of their follows/posts. Open it in a new tab (by middle-clicking their username in a toot) to view them all.
To boost or fav a toot on an external site, copy its URL into the search box on your local instance. The toot will be shown as a search result.
@blinry that sounds really unpractical, at least the last one
@saturno Yeah! :'-(