ches_grin writes "At a recent conference, Microsoft's Kevin Browne discussed the 5 most important ways to improve in-game advertising, contrasting the ideal with the current state-of-affairs in the industry." From the article: "Estimations of the growth of the in-game ad market have been varied. Microsoft's internal estimates put in-game advertising at about $1 billion per year by 2010. The Yankee group recently pegged revenues at $732 million in the same timeframe. Microsoft estimates that 2005 brought in $56 million in in-game ad revenue."