From the findings… Instagram is gaining traction as runner-up social network in 44 countries. Twitter resists in 7 territories, Reddit in 3. Instagram is the runner-up social network in 23 countries, but in the past 12 months Twitter has gained traction in 22 nations. Reddit is growing, expecially in the Northern Europe, and this year it has conquered the 2nd place in 7 territories.
All the updated stats about the social networks of the world are in the page Social Media Statistics.