Ballmer: Microsoft is serious about online advertising, which will account for 25% of total revenue.

Microsoft CEO Balmer said on this Tuesday that advertising business would account for 25% of Microsoft's revenue within several years. Balmer said that it would be at the same time when media and marketing became digitalized. He said in an advertising conference that all advertising investment would be used for digital advertising platforms as time passes by. All media will become digital and so will all advertisements.