In the run up to Mobile World Congress 2010 MSG hosts a three part series dissecting the mobile developments impacting the mobile industry and our society at all levels, as documented in the Netsize Guide. This comprehensive annual analysis of what matters in mobile - often referred to as a mobile 2.0 reference work -- combines country telecommunications data, exclusive interviews with senior executives and insights from online surveys with mobile professionals and practitioners to provide the inside track on what's happening in mobile – everywhere.

Today we look at mobile entertainment. What issues/opportunities peg the needle? What models deliver? And what past industry events/milestones shape the future?