My parents listen to a small county's sheriff dispatch on Broadcastify when my brother is working his shift. I sometimes listen, too. It's mostly mundane stuff, and lots of domestic disputes, making it seem odd that hundreds are listening to a small town's dispatch. But sporadically you'll hear something interesting (e.g., needing backup to help apprehend a 300lbs guy who's huffing propane), which I guess explains it. Or, there are simply that many family members listening.