Of course you wouldn’t really want a Podcast for announcing Amber Alerts. Time-shifted delivery isn’t such a good idea when people need help. But here’s an interesting application of email (not RSS) and audio. I’ve subscribed to California’s Emergency Digital Information Service for a long time now. I get email announcements of everything from severe weather and west-coast tsunami alerts, to earthquake reports and Amber alerts. This week they started using MP3 audio in addition to text.