VIDEO INTERVIEW: Gerardo Adame, general manager at Telefonica-owned Terra Mexico, hailed the company’s recent user growth through mobile, but warned that generating revenue from the platform was much tougher to achieve.

Acquired by Telefonica in 2005, Terra Networks provides internet access and content to Spanish and Portuguese speaking markets, and has grown to become Latin America’s largest online media company.

Speaking to Mobile World Live at the recent Mobile 360 Latin America event in Mexico City, Adame revealed that almost two thirds of mobile users now find Terra Networks through mobile advertising, representing a significant uptick in the last six months.

However, the proportion of revenue from mobile is much lower, and presents a huge challenge for the company to overcome, in its ambitions to battle with both Google and Facebook for advertising dollars.

“We have two thirds of unique users, but not all of them are viewing our commercial inventory,” he said. “We have to learn how to make users who come from mobile spend more time, and increase the amount of page views. The problem is not the price, the problem is the amount, or quantity of mobile inventory, which is smaller than the one coming from the web.”

In the interview, Adame also opened up on the threat of ad blocking to Terra’s business model. Click here to watch.