Seems nice , but would be interesting to read more articles on :<p>>>When the tool is activated after a natural disaster<p>1)What all disasters count as natural disaster ?<p>>>and if you’re in the affected area,<p>2)how does FB get data on radius of affected regions all over the world?Or how is affected region measured for each type of disaster<p>>> you’ll receive a Facebook notification asking if you’re safe.<p>3)Priorities in times of disaster and connectivity questions .Lets say connectivity is disrupted and even if the person is safe ,b/c he/she did not respond to notification would it mark that person as unsafe or unknown ?