joined:Oct 19, 2007
(I've crossposted this to AdSense Google forum, hope you don't mind)
I know you (moderators) don't like links, even to images, but in this case an image is worth a thousand words. Please see the dummy "screenshot" to understand my question: [18103791804392046531.googlegroups.com
If I can upload the image to anywhere else more trustable, please advise me so.
So, from what I've read, the first position in source gets the highest paying ads.
But, in this case, my last position gets 3x the CPC of the first position. That sounds a bit strange right?
I've conjectured three hypothesis:
1 - the advertiser that pays more only uses 728x90
2 - the clicking visitors to position 1 don't convert, the clicking visitors to position 2 do convert
2.1 - position 1 visitors don't convert because they're misleaded by the ads, click and expect to see something else (bad ad copy?)
These hypothesis could be believable if there wasn't enough sampling but, we're talking about +80k page impressions/month and almost 100% coverage over at least a 30 day period...
Question: can I optimize this?