Indeed advertising is helpful in promoting a product to the consumers. Advertising should be one in which the audiences will be amazed and the content should be catchy. Viewers in a German film theater recently saw the BMW logo appear in an unusual place. Viewers watching a Bavarian Motor Works commercial had a Bavarian Motor Works logo imprinted on their retinas with a flash they could see after closing their eyes. While those within the audience were awed, commentary after the fact wonders about how safe or ethical such advertising could be.