Hummingbird Was Just
 

2014 will be the year of mobile SEO. Hummingbird was just the very small visible tip of a very large iceberg as Google struggles to respond to the rapidly shifting landscape where half of all Americans own smartphones and at least one-third own tablets. Those statistics will probably shift upward, maybe dramatically, after the 2013 holiday season.

As a result, your site's mobile performance matters to your SEO rankings. Properties that you're trying to rank need to be designed first for mobile and then scaled up for the big screen. If you don't have a mobile-optimized website, this needs to be your top priority in terms of SEO and design investments for 2014.