The big value proposition for iPhone 3.0 push notification is dumping SMS fees and using instant messaging.
That's an internet app though. So why does iPhone 3.0 push notification require adjustment by carrier?
... IT's a unified generic push notification service for all developers. They've also optimized it for mobile networks. Since they're in over 80 countries, with over 25 carriers, there are a bunch of different configurations. Apple does the hard work keeping the connection open. "And now it's really scalable and ready to go...
So do the carriers get to protect SMS revenue after all?