Mommy bloggers (and their daddy counterparts, too) agree about almost nothing. Some favor co-sleeping; others do not. Some favor banning video games; others do not. Similar disputes surround breast-feeding, vaccines, cursing and whether it's O.K. to force-feed your child broccoli.
But a rare consensus has emerged on at least one topic. What subject could possibly be so clear-cut it has elicited once-in-a-generation unanimity?