Facebook reported a 49% year-on-year increase in revenue to 8 billion US dollars. The social network said that ad revenues in "the rest of the world' region (essentially Latin America and Africa) and Asia-Pacific grew 66% and 60% respectively, while Europe and North America both grew 47%.
Facebook reported that the average price per ad increased 14% and the total number of ad impressions served increased 32%, primarily driven by mobile feed ads. However, Facebook warned "we continue to expect that our ad revenue growth rates will come down meaningfully over the course of 2017. We expect that ad load will play a less significant factor in driving revenue growth after mid-2017. We also expect desktop ad revenue growth rates to slow in the third quarter when we begin to lap our efforts to limit the impact of ad blockers." source: Facebook transcript