Pinterest says one of its most important challenges when it transitioned from desktop to mobile in 2012 was to become a global brand. Things are going well for the company then, since majority of its users are now from outside the US. Two-thirds of new sign-ups are from outside the country, and Pinterest expects its next 100 million users to come from outside the United States, as well. The service grew the most in Germany over the past year, where pinners tripled in number. Users in France, Brazil and Japan doubled, and the company observed a significant increase in sign-ups from Russia, South Korea and Mexico. In an effort to cater to a growing worldwide audience, Pinterest is launching a new section called Featured Collections.