"You have closed registrations on mastodon.social, so how will my friends get in or find me?"
Tell your friends to sign up on https://knzk.me/about then tell them: "Search for MyUsername@mastodon.social" and voilà, you have found each other.
It's very similar to how e-mail addresses work.
@GargronGiven that mastodon pleroma and gnu/social are integrated or compatible is this all just a social media protocol? Still a bit confused how these all fit together.
@ipslfn yes, it's called ActivityPub
Twingyeo(트잉여)는 한국어 사용자를 위한 Mastodon 인스턴스입니다.