10 CRO Truth Bombs That Will Change the Way You Think About CRO
Stuck in a CRO rut? These brilliantly straightforward tips will fundamentally change your conversion rate optimization strategy.
(Also read the comments exchanged between Larry Kim and Sam Crocker.)
Source: 10 CRO Truth Bombs That Will Change the Way You Think
I have always used Quality Score as a guide only – never a performance indicator.
QS is definitely important from the Adwords algorithm point of view but practically, in my opinion and my practice while optimizing accounts, I usually find that there are other aspects to track and focus on to improve business results, other than QS.
This excellent article published on PPC HERO confirms that opinion – http://www.ppchero.com/determining-the-weight-adwords-puts-on-quality-score-factors-a-case-study/
The study by By Natalia Biel (In-House PPC Manager at TitanHQ) confirms that QS is at best a guide (and sometimes not even that).