We have had our modem and router on a timer for about 6 months now too. Not only does it have the benefit of saving you a little power, it also has the added benefit of completely securing your network while you sleep :D And, if there is any relationship between wifi and cancer, hey, it could help with that too. Also, a few router vulnerabilities (that cannot survive a reboot) have been discovered recently. Until firmware fixes come out, seems this would help with that too.