Mobile is crucial and it's here to stay. Marketers today understand how important mobile sites are for reaching customers—in fact, according to the PewResearch Internet ProjectOpens in a new window, nearly 60 percent of American adults own smartphones and 40 percent own tablets. Smartphones and tablets together command fully one third of organic search traffic, and that's only projected to grow. According to BrightEdge's newly released "Mobile Share ReportOpens in a new window," smartphone traffic will grow 50 percent within the next year.