Perfect channel output feedback in additive noise channels has been shown to provide large reductions in the probability of error. Noise in the feedback channel, however, can cause a number of issues. In this talk, we first look at the application of channel output feedback when there is feedback noise. We develop an optimal linear transmitter and receiver for this scenario. The application of channel state information (CSI) feedback has already had substantial impact on the design of next generation wireless systems. Channel output feedback, in addition to CSI feedback, can facilitate further improvements in system reliability. We show that the developed noisy feedback communication architecture can be successfully employed in several practical settings.