i have been wondering since a long time if ad unit size has something to do with cpc ? like we all know that they have much to do with the ctr but do they play some part in cpc aswell ? e.g. 336x280 has the best ctr rate, is there some ad unit with best cpc aswell ? =D what do you guys think ?
CPC has to do with ad unit size? No, practically I don't think it has anything to do with the size that we use. CPC will depends on which publisher that appear for that particular niche and how much they pay for it.