This document discusses trends in mobile media usage and provides best practices for brands to engage mobile users. It notes that 20% of media time is now spent on mobile devices, with smartphones being very common. It then outlines four key strategies for brands: 1) Understand the mobile user landscape, 2) Get the basic web, social and email experiences right, 3) Focus on providing useful services rather than just apps, and 4) Prioritize engaging content over technology. The document advocates that brands learn from startups who are innovating in areas like gamification and the sharing economy to better serve mobile customers.