Dan Rodricks: Vanished faces of a West Virginia boom town


Baby's day on Facebook

Baby's day on Facebook

If social media has achieved anything for 21st century humanity, it's proven brilliant at two very different things. It is a place to instantly share the most mundane family photographs with the rest of the planet and, alternatively, to broadcast the most ill-informed and outrageous disinformation that a multitude will nonetheless believe true. The Internet took notice over the weekend when Facebook founder Mark Zuckerberg used the one purpose to thwart the other.

It started with what most rational American parents regard as a loving chore. On Friday, Mr. Zuckerberg posted a photograph of himself with his daughter Maxima in his lap at what is presumably the...