1. A method comprising, at a mobile device: subsequent to initiation of a user perceivable output, determining whether said mobile device is in a gesture command input ready state based, at least in part, on a display portion of said mobile device remaining in a horizontal viewable position for a threshold period of time; with said mobile device in said gesture command input ready state, determining whether a detected movement of said mobile device represents a gesture command input; and in response to a determination that said detected movement represents said gesture command input, affecting said user perceivable output.