1. A method of providing additional information to a viewer of a moving image file comprising the steps of: providing one or more tags within the moving image file indicating the existence of additional product information; visually indicating the existence of said tags alongside or over the moving image; detecting a request to view said product information associated with said one or more tags; pausing said moving image in response to the request to view said product information; and displaying said requested product information in a window or dialogue box provided over said paused image and wherein the visual indication of the existence of a tag takes place in response to viewer action.