In Mastodon, it is very simple to migrate from one instance to another. You retain your followers, those you follow, and your messages.
It is something essential in a community that is growing so rapidly and can overwhelm any instance with limited resources.
In /kbin, we are experiencing the same thing these days with the #Redditmigration. There aren't many instances yet, but we could help a lot if it were easier to migrate to another instance with less traffic than .social.