H?n n?a, c? hai bên ph?i th??ng xuyên ki?m fra d? essi?u ???c thu th?p so v?i s? ti?n chi cho qu?ng cáoppure.After the winning ad is selected, it is displayed on the webpage of the visiting user. The complete process, from user visiting the webpage to the final display of ad usually takes less than 100 milliseconds.Billing. Advertisers are bille