Facebook COO Sheryl Sandberg has a message for everyone: If you
have kids, leave the office at 5:30 every afternoon so you can
get home to be with them.  That doesn't mean you can be a
slacker. She says she's emailing people late at night and early
in the morning to compensate for leaving early-ish.  She's been
telling people that she leaves at 5:30 because in the hard-
working environment of Facebook it's sort of a no-no to leave
right after 5.  Via Mashable, here's a video of her explaining
it: