Dim or dimmer?
You all miss the point - this is apparently a great thing because it can dim a light and dimmers cost 'between $20 and $50'. Well Screwfix will flog me a dimmer for less than a £5, so is this the first ever known case of technology being cheaper in the UK than USA? (Of course the fact that the lamp you want to dim probably has a led or cfl plugged in, which can't be dimmed is beside the point).