Critics said "Hannah Montana" helped Disney Channel return to a level of commercial success that had been absent since the 1990s, building on the success of programs such as "That's So Raven" and "Lizzie McGuire". Bickford said "Hannah Montana" adopted a business model of combining celebrity acts with film, television, and popular music for a pre-adolescent audience. He called the series "genre-defining". and compared this model to 1990s teen pop artists such as Britney Spears and NSYNC, who were also marketed to children. Ruthann Mayes-Elma said in a journal article "Hannah Montana" is a wholesome, "bubble-gum" television show, and that the use of Miley's catchphrase "sweet nibblets" in the place of profanity in the scripts helped solidify the show's family-friendly appeal. Mayes-Elma also said guest stars such as the Jonas Brothers were incorporated by Disney to encourage the viewership of young teenage girls, and that Disney was selling Cyrus—a then-sixteen-year-old girl—to consumers as a "form of pop cultural prostitution". Some critics found fault with the writing of the series. "The A.V. Club"s Marah Eakin said "Hannah Montana", including its "oppressive" laugh track, is full of stereotypes. A review of a DVD compilation said towards the end of the show's run, Miley's double identity had become the source of "throwaway jokes" rather than larger plot points.