Report: Mobile marketing $2.9B by 2011

Jupiter Research predicts the global mobile spending on mobile messaging and display advertising will grow from $1.4 billion today to $2.9 billion by 2011. About 22 percent of advertisers today engage in mobile marketing in some form, the group says, and a "substantial number" plan to begin doing so in the next 12 months.

Read more about Jupiter's mobile marketing analysis:
- in the Adotas article