In Group Signalling Through What We Share
Launch library · evergreen read

Sharing a specific piece of content can function as a quiet signal of belonging, letting someone communicate membership in a particular community or taste group without needing to say so explicitly, simply by choosing to share something that community would recognise. The share itself becomes a kind of quiet badge, understood clearly by anyone already fluent in that context.
This signalling explains why some content spreads intensely within a specific group while barely registering elsewhere, since its appeal depends heavily on shared context that only makes sense, or feels worth signalling, to people already inside that particular circle. Outsiders often see only a fragment of the joke, missing the layer that gave it its original point.
Recognising this dynamic helps explain why identical content can perform completely differently depending on which network it enters first, since the signalling value of sharing something is never identical across every possible audience it might reach. The very same post can therefore feel electric in one feed and utterly unremarkable in another entirely.