Short answer: No(t yet). Longer answer is in this article: http://www.emarketer.com/Article/Driven-by-Facebook-Google-Mobile-Ad-Market-Soars-10537-2013/1010690

Short answer: No(t yet). Longer answer is in this article: http://www.emarketer.com/Article/Driven-by-Facebook-Google-Mobile-Ad-Market-Soars-10537-2013/1010690 http://www.emarketer.com/Article/Driven-by-Facebook-Google-M...