Have you considered using Facebook or MySpace during an emergency?
Why would you? You probably have the impression that those websites are just for youth to socialize and there is no benefit to government or businesses?
During the next major emergency, have someone search the name of the disaster and see how quickly a group is created and how many people will discuss the incident.
While you might say it is not the official information and is inaccurate.
Would you not want to know that? After all, members of the press are monitoring those websites, as well as members of the public. Shouldn't you?