New research from Gigya shows that although Facebook remains the dominant social login, Google+ is making gains in North America, Europe, and for e-commerce sites.
ComScore Media Metrix said nearly 28% of Pinterest's regional audience is in Brazil.
Ad sales brought the social games publisher $74.5 million in 2011.
2011 was a huge growth year for Facebook in the South American nation.
Social giant takes on Google in South America with São Paulo office.
Brazil's market growth and big sporting event plans may be prompting a slew of recent digital acquisitions by agency holding companies.