To be shocked that my 11yo niece is posting 'selfies' on FB...

[Sacrebleu]

... in which she is sticking her tongue out like Miley Cyrus and that her mum sees nothing wrong with it because "they're all doing it"???

Not to mention that 11 years is too young to be on FB.

Am I naive? Or just getting old?

Nah, that's gross. If she's doing it in a childish imitation way then it's quite funny, but you're right, she shouldn't be on FB.

Bet her Mum changes her mind when 'they' are all doing things much more advanced in a year or two...!

'Twas ever thus - kids have always imitated the pop star of the day and parents have always thought it signalled the downfall of society. If her mum knows that she is otherwise a sensible girl and unlikely to appear at an awards ceremony causing pearl clutching then she probably knows best.

At 11 she shouldn't even have a FB account - I thought the min age was 13???

She'll be posing in hotpants and a bra on facebook and sexting nekked 'selfies' to boyfriends who 'Promise not to show anyone' before she knows it.....

Or maybe not, depends on the girl and the freedom she is allowed with internet on her phone.