Carrie, a mother of three in Northern Virginia, has an old-school mentality when it comes to sharing her family’s life on social media. She regularly posts photos and videos of her kids, ages 19, 16, and 13, on her private Instagram grid for the same benign reasons most parents start doing it: to keep family and friends in the loop and to document the passing years.

“It’s our family album,” said Carrie, who annually turns her Instagram feed into a hard-copy photo book. “If I don’t post it, it’s not in the book. And the kids love the books, by the way.” Her middle daughter, Abby, admits this is true (“More the baby books than the recent ones, though,” she said), but is fed up with the sheer volume of her mom’s content. A teacher who follows her mom once commented to Abby about a photo sh

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