Cathay, Qantas or Asia Miles Frequent Flyer programs
Asia miles is Cathy's program, Marco Polo is status only, you can't redeem miles from Marco Polo... It is extremely poor earning if you buy cheap economy tickets and crediting to the other airline... And if you are based in Sydney, many credit card goes to QF, in HK, many credit card credits to CX.... That's the two main factors I guess....