@shoq I was listening to a guy talk about disaster response - that most people, if you warn them of impending peril (fire, tornado, flood) will first check around and ask their neighbors, friends, family etc. if they are getting out of harm's way. He said this is called "milling" (like milling about) and that if one neighbor leaves (gets out of harm's way) it can cause more to leave.
SO keep on hollerin'. You may just get more people to 'leave'. :)