How to Sign Up as a Blood Donor With Facebook
by Beth Skwarecki on Vitals, shared by Beth Skwarecki from Lifehacker on (#4H3Y6)
When hospitals are running low on blood, there's no way to just order more-blood banks have to get the word out to volunteers like you and me who might want to donate. Facebook is now rolling out a blood donation feature to several US cities that can notify you when your type of blood is needed in your area.