A look at private Facebook groups where strangers can share their deepest secrets and offer emotional support on topics such as diabetes and addiction (Sarah Zhang/The Atlantic)

Sarah Zhang / The Atlantic:
A look at private Facebook groups where strangers can share their deepest secrets and offer emotional support on topics such as diabetes and addiction  —  It was Christopher's therapist who suggested he look for help online.  His wife had cheated on him, and he had been struggling since their divorce …