There's a Facebook page created by some school kids called "shut Mumsnet down cos they hate kids" or some such thing, which is harmless enough.
But they've posted this advert from F4J, which is rather more sinister.
I wasn't aware that it was mandatory to hate men to be a Mumsnetter. I shall have to inform DH at once that he is to leave home and never see the DDs again. 
They're rather sad and scary aren't they?