Google started adsense back in 2003 and at that time payed the publishers full amount as it would set the payout ratio . But later this smart pricing came and then it started to pay us low...if the keyword " Mesothelioma" is a $50 click and the payout ratio was 50% then we would be getting 25$ ... but as this smart pricing came it would just pay us aroun 1-2$ though the keyword muight be 50$ still.. so anyone has got the idea when did thisa smart pricing came and its history with GOogle... Please share!