In scores of interviews for this article, just the mention of social media elicited groans and sighs from young parents who are barraged by handmade birthday invitations and color-coded clothes-pin chore charts on Pinterest. They debate whether Facebook or Instagram is "the hardest," whether it's the images of the home-cooked organic feast or the just-cleaned house. It helps only a little to know that people are being highly selective about what they share. "Someone will put out there, 'Oh, I just braided my child's hair.' But you just yelled at them like 50 times to sit down," says 30-year-old B. Marcell Williams, a mother of four living in St. Louis.