I agree with the posters who say we can't trust the media but where do you get your information from? I class the ABC, Al Jazeera as media. I don't take any Murdoch media seriously.
Even though it's off topic I agree that most illegals come in by plane and don't leave. Actually I know many live in my high tourist area. I met a(n Australian) Customs officer in Bali who said they are overwhelmed and Immigration is worse. Today's news (ABC) finally exposed the racket in Indian student scams where approx 50% of applications were fraudulent. One guy had been kicked out, changed his birth date returned and took his claim to court after being knocked back again! Finally he was exposed. Of course the real criminals are the immigration agents who fleece the desperate.