It is very important to have a mobile-friendly website. As mobile search volume is starting to overtake desktop search volume (and trending upwards), @google plans to make mobile-friendly websites standout in its search results. Google has been testing an icon that tells users which website is mobile-friendly. This icon could be valuable in driving search traffic to mobile-friendly websites. Furthermore, having consistent experiences across multiple devices is also important as the majority of consumers are multiscreening.- Link