Quality score for viewable CPM campaigns[ Edited ]
September 2015 - last edited September 2015
I would like to know how Google calculates quality score for GDN campaigns that use viewable CPM bidding strategy.
I was reading a few discussions and they always pointed out that for CPM campaigns only thing that matters is the quality of a landing page (most of them were linking to this article, although there is no such statement there, it can be figured by eliminating factors unrelated to GDN). I didn't found an official Google material covering these statements.
Additionally, this PPC hero article covers the cases of calculating QS when keywords and topics are the targeting options in a GDN campaign. What would be the case when I have an ad group targeting only interests, on a viewable CPM bidding, and have only display ads?
How can I improve performance (lower viewable CPM) for these campaigns?
Thanks in advance.