As I am signed up to the Boots Parenting Club for the vouchers, periodically I get sent a magazine relevant to DS's age.
The other day I got the 5-9 months one in the post and flicking through it was a bit shocked to see this (on pg 12):
"from 6 months, you can leave your baby to cry for short periods. Try five minutes at first, then gradually extend the time so she'll learn to settle herself." 
I find it very cross-making that they are presenting this as though this is an irrefutable part of parenting whereas obviously CIO/controlled crying is a pretty controversial method that many parents, myself included find cruel and unnecessary and possibly damaging.
They are GIVING ADVICE to people, which is a position of responsibility! I don't bother getting annoyed by many things but this has really pissed me off!