Cries for help are hidden by the chatter of chaos. Vital updates are lost in the noise. In the crucial days after a natural disaster, information is not organized. But if it were, lives would be saved.  Springing to the cause is a new cadre of volunteers who take it upon themselves to offer help from afar, often without ever leaving their living rooms, or in the case of Leesa Astredo, of getting out of her bathrobe. "Sometimes I'll get on the computer at the beginning of the earthquake and spend 20, 30 hours at a time working that one disaster." Astredo organizes a team of virtual first responders called Info4Disasters.  Digital disaster responders are a growing force in emergency responses. T