Overseas markets bring in more advertising revenue than the US for Facebook, amounting to 51 per cent of global ad sales in the first quarter, with growth in Asia the fastest in the world at 57 per cent, company executives told Reuters.

While Facebook has reported regional growth in per centage terms, this is the first time it has detailed ad sales outside the United States and Canada as a per cent of worldwide sales.

Like the advertisers it courts, the world's largest social media platform looks at international markets for growth.

"The next 1 billion consumers are going to come from these countries," said Carolyn Everson, vice president, global marketing solutions at Facebook.

Total advertising revenue for the quarter increased 46 per cent to $3.3 billion, the vast majority of Facebook's $3.5 billion in quarterly revenue. Fifty-one per cent of total ad revenue would be about $1.7 billion for international markets. International advertising revenue rose 36 per cent from a year earlier, Facebook said.

While Europe is growing slower than the United States, the Asia Pacific region is ahead and a focus for Facebook.

By comparison, Google said that 57 per cent of its revenue was from international markets in the first quarter, although it did not break out ad revenue specifically.

Mobile advertising represents more than 70 per cent of Facebook's total ad revenue, and mobile is particularly strong and attractive to advertisers in emerging markets, Everson said.

Facebook is benefiting from exporters in China trying to reach people outside its country and from an influx of venture capital funding into India, giving start-ups funds for advertising.

Chinese businesses are getting more sophisticated about promoting their brands, said Dan Neary, vice president of Facebook's Asia Pacific region. "Increasingly manufactures are becoming savvy marketers in their own right," he said.

While Facebook has offices in Hong Kong, Everson said there is "no news to share" on further expansion in China.

In India, e-commerce startups are exploding and many are using Facebook's advertising platform to reach new consumers, Neary said.

The company has also initiated specific methods tailored to the country including optimizing video and pictures for slower connections in India, where an ad product called "missed call" also helps customers avoid phone call charges.

Many people in India dial a friend and hang up to send a signal without incurring charges.

Facebook incorporated this system into its ads. A person can place a "missed call" by clicking on a mobile ad from Facebook and receive a return call with information, for example the score of a cricket game, sponsored by a brand.

Facebook also plans to capitalize on the visual images, specifically photography and videos, that are being embraced by younger audiences across the world. Instagram, the popular photo app, announced on June 2 it is opening up its platform to all types of businesses, not just hand-selected brands and will begin rolling out more specific targeting capability globally this year. – Reuters