Yeah; but that's just the deal with programmatic. Everyone knows that it's probably 50% garbage, so they just pay 50% less than they otherwise would. It's a game of moving averages and benefit per dollar. Fraudulent impressions are a problem, but ultimately I think that a bigger problem is the huge number of low-value impressions that just drive the price of the entire market down. When an advertiser has 30 ad slots on a page, not all 30 are really worth buying...