There is a weird moment when I get a push notification that someone has just followed me, but I'm certain that they followed me like two days ago. When I check, they've changed instances and swung back around to pick up previous follows.
I'm not sure what to call this. I guess if you abandon a profile on an old instance it would be a ghost, or maybe a carcass? (I like the latter.) A second follow from a different instance though... twinning? An instance echo? I need help. (And more beer.)
@PicklesTFC really tempted to switch instances and follow again, just because of this post.