"30 to 40 percent of college students suffer a debilitating 
depressive episode each year. "

Facebook started working with the National Suicide Prevention 
Lifeline in 2007. A reader who spots a disturbing post can alert 
Facebook and report the content as "suicidal."

http://health.heraldtribune.com/2012/02/24/online-cries-for-help-can-signal-depression-specialists-say/

www.peoplewho.org