Not aware of any existing services but during the recent tornadoes in AL, I was wondering why someone has built a google map/twitter mashup that would allow tweeting a sighting and either allow the person to specify the location or use the device's GPS readings. An account could be setup (@tornado_bot) and a service could pull the coordinates from its tweet-stream. If you follow it and are nearby, it could notify you of the danger(via direct message). Also, a way to specify possible direction and speed would be really beneficial.
Saddam and the Nazis surrendered, bin Laden did not. The rules of engagement are clear, which also hold true for metro police actions, in that lethal force is authorized when the other party brandishes a weapon. If he had not had a weapon, if he had raised his hands instead of an AK then he would have faced trial but that is not how things went down.
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