An advertising device and method of advertising are disclosed for use in a sporting arena and particularly areas in which player impact may occur. The advertising device may include an electronic display for presentation of information in visual form, padding associated with the display, and a fastener for attaching the advertising device to a post where player impact may occur such as a boxing ring corner post, a football goal post, or basketball stanchion. The disclosed advertising devices advantageously multiply advertising real estate in locations where it was previously not possible to do so. Moreover, in the event of impact, the disclosed advertising devices maintain their integrity while also providing player safety.