But that assumes that the new design does make more money. I, honestly, fail to see how, e.g., moving the account switch button in the new Gmail app from left t

But that assumes that the new design does make more money. I, honestly, fail to see how, e.g., moving the account switch button in the new Gmail app from left to right increases ad views. On the other hand, from all we hear about Google's promotion process, it seems quite likely that the redesign happened "just because" and somebody gets to add a checkbox to the promotion list.