Five more advertisers have signed on to use Tivo's service that allows TV viewers to interact with commercials, Adweek reports(via MediaBuyerPlanner). Ameriquest, E*Trade, Nautilus, Novartis and Tylenol will add code to their TV commercials that will display a call to action when TiVo users watch or fast-forward through their ads. General Motors and The WB were the first announced advertisers for the new feature.