On the one hand, there could be a drift toward Victorian uptightness. If people are scared that their transgressions will come back to haunt them, then presumably there will be fewer transgressions.

On the other hand, the new transparency could loosen the definition of “transgression.” In a 1993 essay called “Defining Deviancy Down,” Senator Daniel Patrick Moynihan worried that the more common social pathologies became, the more common they would become, because the recurring spectacle of them would render them more acceptable…

In this view, one ingredient of an effective moral system is hypocrisy. Everyone purports to support a rule that many of these people in fact violate, but so long as the violations are rarely publicized, the number of hypocrites doesn’t grow, and the rule — in this case the norm of monogamous fidelity — stays more or less intact; at least, it stays strong enough to keep the whole system of marriage from collapsing.