US and European mobile ads to exceed $5 bln by 2012

US and Western European mobile advertising revenues will reach a total of $5.08 bln by 2012, up from an estimated $106.8 mln at year-end 2007, according to Local Mobile Search. Local Mobile Search predicted that the United States would account for about $2.3 bln of the total, with $2.8 bln coming from Western Europe.