An academic says public education campaigns need a rethink after two girls used Facebook to alert people that they were stuck down a stormwater drain. The 10 and 12-year-old girls updated a Facebook status to say they were lost in an Adelaide drain, and a young friend called for help on their behalf. Glenn Benham from the Metropolitan Fire Service (MFS) says it is concerning the girls raised the alert on the social networking site instead of calling 000. "If they were able to access Facebook from their mobile phones they could have called 000, so the point being they...