Notifications I get: IM/SMS/Email, calendar events, train delays (when applicable), payment, catastrophe alert (most of them silent). The rest I consider spam.

Notifications I get: IM/SMS/Email, calendar events, train delays (when applicable), payment, catastrophe alert (most of them silent). The rest I consider spam. And notification spam is the number one issue I see with devices I manage for relatives, etc ("how do I turn this off, I don't know where that comes from, blabla"), which is an improvement over the PC era with its much more horrible phenomena.