I'm quoting this... "With the Smart pricing idea, your income varies a lot, according to each of your channel's CTR rates. Now this is very important: It’s account-wide, not channel-wide. So if you have a very good CTR (5%-50%) for one website, and you include it in the same account with a 0.04% CTR website, you will lose money. Remove all the websites (from your account) that don’t have at least a 5% CTR (or depeding on your overall CTR, remove the ones that are significantly lower than your average), or you’ll affect the income of all the other good converting websites." Can anyone either refute or confirm the validity of this?
I can refute it. Smart pricing has nothing to do with CTR. Smart pricing depends on the quality of traffic you have at your site (i.e. the conversion rate that results from the clicks.)