In one aspect of the disclosure, a method of delivering content to a portable electronic device is provided that comprises receiving a request for content; determining a subscription level for a subscriber of the portable electronic device; determining, based on the subscription level, whether to deliver supplementary content with the content; and, if delivery of the supplementary content is to be effected then determining a method of delivery of the content; determining a method of delivery of the supplementary content; determining the supplementary content; and delivering the content and the supplementary content.