Facebook gives parents control on when kids can use app

NEW YORK (AP) — Facebook is adding a "sleep" mode to its Messenger Kids service to let parents limit when their kids can use it.The company says parents can now specify the times kids aren't allowed on — either as a one-time restriction or something recurring, such as after 9 p.m. every school night.Facebook launched the messaging app aimed at kids under 13 in December. It comes with a bevy of parental controls and no ads. But some child development experts have called for Facebook t