Worldwide spending on mobile advertising is expected to reach $31.5 billion this year, a 75 percent increase from 2013 thanks largely to Facebook and Google, according to a new report by research firm eMarketer.
By the end of this year, eMarketer expects mobile to account for nearly a quarter of total digital ad spending, which is estimated to reach $137.5 billion. That's up from 15 percent of the $119.8 billion digital ad spending total in 2013.
In 2013, spending on mobile advertisements more than doubled, to nearly $18 billion from $8.8 billion in 2012.
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