This document provides guidance for agencies to help their clients build mobile-friendly websites. It includes an introduction on the importance of mobile, an action plan for agencies to mobilize their clients' sites, common questions agencies may receive from clients and responses, and a section on how consumers use mobile devices. The action plan outlines educating clients on mobile, testing clients' current sites on mobile, showing clients what competitors are doing mobile, inspiring clients with a sample mobile site, building a mobile site, and integrating mobile into marketing strategies. The overall aim is to help agencies guide their clients to capture the growing mobile opportunity.