In an effort to combat blood shortages, Facebook expanded its blood donation tool to the entire continental U.S., according to Business Insider.
The tool allows Facebook users to mark themselves as blood donors so hospitals, blood banks and the American Red Cross can request donations from them when they experience shortages.
The tool was previously only available in five U.S. cities and more than 500 people made appointments with the Red Cross to donate during the test period. It has also been available in four other countries, where Facebook says it has helped facilitate tens of thousands of donations.
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