Slate contributor Deborah Copaken Kogan dropped by the Today Show this morning to discuss the moving, hopeful essay that she published in the magazine this week, "How Facebook Saved My Son's Life." Deborah's toddler, Leo, had come down with a mysterious illness that doctors first thought was strep, but when they tried treating Leo he wasn't getting better. Deborah posted Leo's photos on her Facebook wall and friends and relatives accurately diagnosed Leo with Kawasaki Disease, a rare condition where a child's blood vessels are inflamed. Deborah describes the crowd sourced diagnosis as a miracle, and adds that her social network gave her "a sense of humanity."

Matt Lauer mentions in his interview with Deborah that so often we hear about the negative side of social networking (as Emily Bazelon's Bull-E series on online bullying can attest), so it's so wonderful to hear that they can have a positive impact, too. Clip of Deborah below.