This document discusses the growth of mobile device usage and its impact on web design. Over the past three years, 91% of the population uses a mobile device, with 56% owning a smartphone. By 2014, it is estimated that 2 billion mobile devices will be shipped. Effective mobile web design is clean, simple, easy to search with less text and compact pages. The document recommends using HTML5, responsive design, readable fonts and bidirectional text to make websites accessible across devices. Examples are provided of both mobile-friendly and non-friendly websites.