The telecommunication sector continued to grow, with revenues reaching USD 1 trillion for the first time in 2005. Users typically paid less for individual services but bought more of them. The introduction of these new telecommunication services has helped increase the percentage of telecommunication revenue in overall GDP to 3%. The chapter examines the size of the telecommunications market and highlights the sectors with the most impressive growth. Mobile revenues are increasingly important and now account for roughly 40% of total telecommunication revenues. Broadband revenues are also beginning to compensate some of the loss of voice revenues. The chapter also explores trends in research and development.