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Old 02-27-2009, 03:02 PM  
rowan
Too lazy to set a custom title
 
Join Date: Mar 2002
Location: Australia
Posts: 17,393
adsense: how do you juggle between ad units and link units?

I have a site that's making a small amount of adsense income (about 25k impressions per day). I am experimenting with both ad and link units, so I've set up a system that lets me define the ratio between the two (eg 30% of impressions to link units, 70% to ad units). The problem is that the "winning" eCPM (the unit with the maximum eCPM) keeps flipping back and forth, and it's not always by a small amount either. For example:

yesterday:
linkunit 7815 impressions $0.37 eCPM
adunit 17853 impressions $0.85 eCPM

ok, right choice there, but so far today link units are making a better eCPM...

linkunit 1869 impressions $1.02 eCPM
adunit 15259 impressions $0.84 eCPM

If you use both link and ad units, do you have a system to decide between the two?
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