Oh by the way, if you find an instance that seems pretty toxic (my troll was from a "libertarian" instance) there is a way to block the entire instance, even if your own doesn't block it. Go to a user of that instance's profile and in the three-dot menu, there's the option to block the domain.
@davidbilla… what is an instance in this context (first day here).
@Libertine Your server. In our case "mastodon.world"
@davidbilla, so if someone made a “groyper” server I could just block… all of them? All from one spot?
@Libertine I'm not sure what a groyper is, but yes, you could.