Successful disaster response is an exercise in managing human resources under very difficult conditions. Catastrophic disasters can disrupt both the physical communication networks and the social networks critical to efficient response and recovery. While a well-designed disaster plan serves as a framework, it often requires communication and collaboration between responders to adapt it to the situation at hand. Displacement of library staff adds to the chaotic nature of post-disaster communications, increasing the need for collaborative Web spaces to adapt to changing situations. Using case studies of catastrophic disaster response at libraries, this article begins with an analysis of human resource management problems common to disaster response coordinators worldwide. It then discusses Auburn University Libraries' uses of free Web 2.0 applications in support of library disaster preparation, response, and recovery. While Auburn University's location on the coastal plain of Alabama is vulnerable to both hurricanes and tornadoes, Auburn has so far only needed to respond to small-scale disasters. The devastation suffered by libraries in the paths of Hurricanes Katrina and Rita served to propel Auburn toward a more comprehensive preparedness stance. Disaster planning at Auburn has embraced Web 2.0 applications, such as Google Documents and Google Talk, to introduce redundant communication channels and to allow for efficient collaboration regardless of the location of library responders. By identifying key Web 2.0 applications and properties that are useful for response and recovery efforts, the research in this article may assist other libraries in improving their disaster preparedness.