How is it different?

For one, it's a fractal of the larger environment, rather than a microcosm.

Facebook vs phpBB.

Niche forums still exist, even if waning. The instant message service Discord offers something of the intimacy and organization forums have in a different format. There's more or less the same chances to meet and bond.

Most teens have no idea about this, though. All they know are the big brands, and they don't see the appeal of the cracks and corners.