A recent study in Archives of Disease in Childhood assessed the quality of advice on five common paediatric questions on various internet sites accessed via Google. They rated the first 100 results for each question as to whether advice was consistent with current medical recommendations, inconsistent or not available. Thirty-nine percent of the 500 sites gave correct information, 11% were incorrect and 49% didn't answer the question. The quality of advice varied hugely depending on the question; only 51% of answers on autism and MMR were "correct" but 100% gave consistent advice on mastitis and breastfeeding and the correct sleeping position for a baby.

Read all about it here: Googling children's health: reliability of medical advice on the internet. (Archives of Disease in Childhood 2010;95:580-582)