> The advertising companies know how to detect that stuff quickly and ban the abusers. this assumes it is in their best interest to do so.. An 'acceptable lev

> The advertising companies know how to detect that stuff quickly and ban the abusers. this assumes it is in their best interest to do so.. An 'acceptable level' of ad fraud could conceivably require a bigger spend on the part of the customer to reach the same audience, and therefore bigger revenues/profits to the ad network