Let us discuss more about link unit: PROs: Higher Payout for each click: because only one group of ad in a page, suppose google place all important and high payout ads there because the page is hosted at Google, it must has the highest quality that can place the highest payout ads More clicks: It must has higher click though rates (CTR) than you own page, because it has ADs only, nothing more. If a visit click, it must click an ad CONs Two clicks need: Visitor must click two times for you get some money, they might just click back or close the window Less information: In fact, I don't know it's good or bad, but it obvious takes less space on page and less heat from heatmap. So, imo, it has less chance to be clicked. I do not have real data, I have some channel data but I cannot get any real result from it. So I assume: Link Unit VS AD Unit AD Unit Gets More Clicks AD Unit gets more clicks, real money for each click Link Units gets less clicks, but large percent will click 2nd time, get real money too Link Unit Has Higher Pay for Each Click AD Unit gives impression money Link Units took less space, more clean page you will have ..... .... ... .. . --- If you think it has more PROs and CONs, please add If you have different opinion, please share If you have real data, please please share