Reviewing a New TV Show

Every fall season, as a way to promote their upcoming shows, the networks send out DVD screeners to the country's top critics.  The networks' marketing departments can use certain snippets of the reviews and place them in the commercials.  Anyone who has ever been exposed to commercials (in the DVR era, watching TV doesn't mean watching commercials) has seen an advertisement where they see "**** Four Stars." The movies studios have been using this marketing technique since television existed and
now websites like Rotten Tomatoes and MetaCritic tabulate aggregate score for the movies based off the reviews.