It is pointed out recently that the ν=1/m quantum Hall states in bilayer systems behave like easy plane quantum ferromagnets. We study the magnetotransport of these systems using their ``ferromagnetic" properties and a novel spin-charge relation of their excitations. The general transport is a combination of the ususal Hall transport and a time dependent transport with quantized time average. The latter is due to a phase slippage process in spacetime and is characterized by two topological constants. (Figures will be provided upon requests).