Research into children's use of the internet with its attendant opportunities and risks has been the focus in Europe for the EU Kids Online project across 25 countries. Parallel research in Australia, modelled on the European project, has provided solid comparative information about the balance of opportunities and risks for children who use the internet, aged between 9 and 16 years of age.
http://apo.org.au/research/risks-and-safety-australian-children-internet