Facebook, too, is figuring out its role in keeping users out of harm's way. In December, the site launched a program that allows users to instantly connect with a crisis counselor through the "chat" messaging system. And on Feb. 2, two Colorado teens were credited with saving a suicidal teen's life through Facebook.
"He was posting goodbyes and 'I'm sorry' on his friends' walls," 19-year-old Gary Ramirez, one of the teens, told ABCNews.com. "If I didn't know this kid was safe, I wouldn't have been able to sleep. ... We tried to keep him calm until the police could find him."
Bennett said she wishes someone had reached out to her son.
"If your friends are experimenting with drugs or alcohol and have overdone it, it is your responsibility as a fellow human being to make sure they're OK," she said.
Bennett "usurped" her son's Facebook page after the overdose, which she uses to post uplifting updates to his many friends.
"John is making a new sound today," she wrote Feb. 13. "He is growling like a wounded bear. My new motto is that anything new is good."