To those saying that the weight restrictions can be easily bypassed with self-tagging check-in...
A friend of mine just told me that he tried all the shtik to bypass it and was unsuccessful. The conveyor belt kept returning his suitcase, since the entire 1st stretch of conveyor belt weighs the suitcase and if at any point it is overweight it will return the suitcase.
A staff member told him that the machines only allow up to 1kg overweight.
Guess the machine makers/airlines are not that stupid after all
