Mobile phone advertising is increasing and the young (18 to 24 year olds) are most likely to respond to the ads.
33% of American mobile phone users have received mobile ads in 2008, according to Brand Week. Whilst 41% of iphone users have received ads.
SMS has increased 16% since 2007, and remains the most popular advertising method via the mobile. A third of those receiving messages respond in some way to the message. And women were twice as likely respond to the ads compared to men.