Emergency response entails a widespread tactical effort by countless government agencies. Too often, citizens are left out of the loop and have to rely on mass media, cell phones, and Web sites for emergency information. Microsoft Vine is a new social networking tool, designed to help its users keep tabs on people and places. Currently in a beta test in Seattle, the service lets you enter a location and see news reports aggregated from 20,000 sources, and from the United States National Oceanic and Atmospheric Administration. You can enter people you want to track into Microsoft Vine, and then receive an e-mail, text message, or an update about them in the Vine dashboard -- which runs on Windows only. Disaster victims with Macs are out of luck.