There some bad guys were catched by FBI, we can track down to find out the source computer used by the bad guy, but it is hard to catch the individual. It is very difficulty to codinate police forces in multi-countries. To protect ourselve, the best way is never click any link in a strange mail. But the administrator of Totalbowling site should report this to Aus police or FBI, because the individual is a registered member and who had a gmail account, althought there information may be not true, but it can provide some helps for catching them