Here at headquarters in Bethesda, Md., we're tunneling out from the Blizzard of 2010, a paralyzing storm which dumped about 2.5 feet of snow across the Mid-Atlantic region. Schools, businesses, government offices, roads, even convenience stores are all closed, and probably will be for another couple of days. It's a full-scale emergency, whose only redeeming quality is the email marketing metaphor it affords. We're all going to face email emergencies of our own. Getting through them, and winning back subscribers afterwards, will be part of our jobs in 2010. Is your emergency response plan ready?