OK im not sure how much im allowed to say with regards to this so i will try to keep it as open as possible I have a website, and on it i have multiple adsense units. The clickthrough rates obviously differ depending on where the block is but the amount i get from 1 unit is quite a bit less than another - is this normal?
typically, the ads with the highest CPC will be placed on your ad unit that is first in your html coding....basically, this means that the ad block that appears first on your site will have ads with the highest CPC, and then it slowly lowers as you get into your other ads....of course this all depends on how many adwords advertisers have ads for your keywords
thanks for that, ive never really monetised a site before and im working on this now so im fining out a lot recently
i have the same issue.. some adspots are making double what others make on the same page... i've been actually thinking of running ads from another network there as it has proven that adsense doesn't perform well there...