alika - 10:05 pm on Jun 7, 2010 (gmt 0)
Total substitution of Adsense by another, similar, network (everything else being equal).
First off, there's really nothing quite similar to Adsense, in our experience.
This is where eCPM will be a useful metric, so you can see how well the other ad networks do for your site.
Been with Adsense since 2003, and not a single ad network could approximate the eCPM and income we get from Adsense. eCPM of the other networks amount to only about 3-10% of what we get from Adsense, so it's no brainer for us to give priority to Adsense.
If Adsense can give us Kobe steak for lunch every day, the other ad networks can only buy us McDonald's quarter pounder each day.
But of course, your mileage may vary. The key is to look at the eCPM -- and go for the network that brings you the most eCPM and revenue