Startup Idea : Social Emergency

If there is an emergency in a hospital. Consider For example a rare blood group,need for a patient immediately. Following options are available in Existing System: 1) Contacting Blood Bank 2) Sharing Information to Friends and Relatives Problems in Existing System: 1) Blood will not get in time 2) Information may not reach all people. 3) Person available is not in near by place My System Will resolve all the problems: My idea is the information should be passed through social network notification at hospital surrounding places around 5 to 10km whoever uses the Facebook,twitter or other social network. 1) So everyone around this hospital the info may reach properly 2) Distance around 5 to 10 km in people. so they will reach easily to the hospital