At least, in my head, these are rare occurrences on the scale of Katrina and 9/11 that people would be notified. I think once a year if someone interrupts my game to say "Hey, we're being attacked by god/mormons/terrorists/etc, try not to die", I'll forgive them for ruining my game.
Or are you so insanely entrenched in your game that you'd rather die than be notified of an emergency? -Taylor
The announcements aren't sent out often, but the tests are much more common.
Can't wait to be on the verge of the game-winning headshot* only to have the screen switch to "THIS IS A TEST OF THE EMERGENCY BROADCAST SYSTEM. THIS IS ONLY A TEST..."
*(Full disclosure: I'm actually terrible at FPS games.)
"The new Ericsson modem can also stay active while a computer is off, listening for wireless messages. That means it could wake up and alert the user when it receives an important e-mail, or if someone is calling with a conferencing application like Skype."
That also means it could constantly drain your battery. Please tell me this is just an option.