In response, specialist stations have emerged that aim to establish a fixed audience, and also provide convenience for the spontaneous listener, who can more easily locate whatever type of program it is he wants to hear.
專業網的出現就是企圖：一方面建立固定聽眾群，一方面讓即興型的聽眾在心血來潮想聽那類節目時，能立刻找到。