As consumers continue to buy and use smartphones and tablets, it becomes increasingly imperative for video advertisers to put a greater emphasis on advertising on mobile devices.

According to an August report from Business Insider, more smartphones than PCs were sold in the United States in 2011. In total, smartphones account for 10 percent of all internet traffic and about half of all traffic to Pandora internet radio and social media website Twitter.

A comScore report from August found that from April to June of this year, 234 million people in the country over the age of 13 used a mobile device. About half of them downloaded applications and used a browser, more than 32 percent went on a social networking site on a device and more than one fourth of all mobile phone users listened to music.

However, while an increasing number of U.S. residents are turning to mobile devices like smartphones to consume media, advertisers are not yet turning to this technology, representing a huge untapped potential for video advertisers. In 2011, $1.25 billion was spent on mobile advertising in the United States, which Business Insider reported as "a tiny fraction of overall U.S. ad spend."