US mobile ad spending on social networks will reach $4,5-billion by 2018, according to a new Forecast View from Forrester Research. 
“Forrester expects the spending on mobile ads to grow nearly twice as fast as the spending on desktop ads on social networks. We believe that the future of social is mobile,” writes Forrester’s Jitender Miglani in a new blog post.
In the post, Miglani outlines why mobile will be a key driver to social media spending growth:
* More users are accessing these sites through mobile devices;
* Share of time spent on social networking sites on mobile devices is increasing;
* Mobile ads provide better ROI for marketers;
* Mobile ads earn more money for social media vendors than other platforms; and
* The mobile ad ecosystem will continue to evolve.