The argument I've heard against this is its much harder to report views this way. It basically becomes an honor system between Google and the advertiser, when t

The argument I've heard against this is its much harder to report views this way. It basically becomes an honor system between Google and the advertiser, when today its the user getting the ad, so it's easier to verify. Google is big enough where they could eventually do this most likely, but smaller sites won't have the 'credit' to pull this off.