Should I be using the grounding terminal?

My integrated amp has a grounding terminal which I am not using. Should I have a wire running from the terminal to a ground for any reason (no audible hum is present)? If so, please explain why. Is this terminal simply redundant to the ground on the power cable?
Does your integrated have a phono section? If it does, the ground terminal is usually meant for the turntable ground.
No, sometimes you use it. Grounding is a very idiosyncratic thing but if you have no hum leave it as it is. One of my tables is grounded and the other isn't.