1. A computer-implemented method, comprising: at a portable electronic device with a touch screen display, displaying a list of items; detecting a first gesture on the touch screen display to edit the list of items; responding to the first gesture by displaying a first icon next to each deletable item in the list; detecting a second gesture on the touch screen display to select one of the deletable items; responding to the second gesture by displaying a second icon next to the selected item; deleting the selected deletable item if a third gesture on the second icon is detected; deleting the second icon if a fourth gesture on the first icon next to the selected deletable item is detected; and ceasing to display the first icon next to each deletable item in the list if a fifth gesture on the touch screen display is detected.