Have your site gone mobile yet? I recently changed the template used on this blog to one with a responsive layout. I also changed the adsense ads to a responsive ad unit. Why is this important? Because Google cares.
In a world where more and more people use “mobile” devices to access the web, and given the fact that browsing the web on mobile devices are different from desktop browsing, Google decided to differentiate the results depending on what browser is used to do the search. Mobile friendly sites will rank higher on searches made from mobile devices from now on. So go make your site mobile friendly, now.