April 21 Is Your Last Chance for Mobile Optimization Before ‘Mobilegeddon’

For years now, mobile usability has been a factor in Google’s search algorithm. Sites that are optimized suitably for use on mobile devices rank higher than their non-optimized counterparts, even on desktop devices. But until now, that ranking factor has been both limited and ambiguous.  Aside from a “mobile-friendly” tag associated with various sites in…