Mobile advertising is promotional activity designed to be delivered to cell phone, smartphone and other handheld device users. The market size presented here also includes Web-based search and display ads. As more consumers use smartphones and other handheld devices to access the Web, advertisers have devoted more money to mobile advertising. According to IDC, the mobile advertising market may double to $2 billion in 2011. Google had a 59 percent share of the market; Apple had less than a 10 percent share in 2010.

Geographic reference: United States
Year: 2009 and 2010
Market size: $368 million and $877 million respectively
Source: Olga Kharif, “Google Gains Market Share in U.S. Mobile Ads,” Bloomberg Businessweek, December 3, 2010 and available online here.
Original source: IDC