Look for commercials during the show promoting the same product discussed in the show. Infomercials often feature a toll free number or ordering information on the screen during the show. Remember, they are trying to sell a product. They want to make sure that you know how to order the product. FCC rules require a sponsor of a paid program to disclose who is paying for the program at either the beginning or end of the infomercial.
Infomercials sell a wide variety of products.
Infomercials often feature endorsements by celebrities who were once popular. The sponsors want you to watch the show because you recognize the long-forgotten stars. Be wary of programs that endorse one product as better than all others. Legitimate shows typically evaluate and discuss products in an impartial manner. But an impartial show never displays ordering information for the product.