iPhone Push Notification Screenshots

Developers have begun testing the new push notification system in iPhone OS 3.0. MyAppleGuide has published a gallery of screenshots demonstrating how the system works; however, their server is down due to excessive CPU usage.

MacRumors has saved a couple shots and describes the system:
Each application will ask for permission to provide push notifications upon launch. Once authorized, you can customize the type of notifications you wish to receive: sounds, alerts, and/or badges. Alerts provide an SMS-like pop up dialog while badges simply add a number to the corner of the app's icon.

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