Google is warning those responsible for websites that if they are not adapted to mobile versions (responsive design) from April 21 will suffer a penalty. This penalty may consist of desapariciónde search results of Google, especially in mobile search.
Google justified this action by the need to adapt your browser algorritmos new usage patterns, with more access to the Internet via mobile devices.
Having a factor not only an SEO positioning, if not almost mandatory to have prepared for mobile, the risk disappear mobile search in a web.
Is your web adapted to mobile traffic? You can check this Google tool.
“Do not miss the time, if your website is not suited to mobile, still time to adapt, contact us and we’ll help !!”
You can view the article Google official expert in web design in Google Webmaster Central Blog