Facebook did a lot of things right this year. Notify wasn't one of them.
It seems likely that Notify is an experiment, and Facebook will use what it learns there to inform the way it builds notifications into the flagship Facebook app. It would be much more useful to publishers and readers to let users subscribe to push notifications from brands inside Facebook, with varying levels of granularity to separate those who want to see everything from a publisher from those who only care about top stories and breaking news. And perhaps Notify will help get Facebook there. In the meantime, if you've been clamoring for more push notifications on your phone, dozens of publishers are here, and they're ready to help.