CHART OF THE DAY: Facebook Usage On Smartphones - Business Insider

http://www.businessinsider.com/chart-of-the-day-facebook-usage-on-smartphones-2013-3?nr_email_referer=1&utm_source=Triggermail&utm_medium=email&utm_term=SAI%20Chart%20Of%20The%20Day&utm_campaign=SAI_COTD_032713

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