Pingdom
Which countries have the most users on Facebook? Following the United States (with 130 million), top honors go to the UK (28 million), (Indonesia 26 million), Italy (26 million), France (26 million), India (26 million), Germany (18 million), Mexico (16 million), Turkey (16 million), and Canada (15 million). That's according to site monitor
Pingdom, which based its findings on per-country traffic estimates to Facebook.com, and data from Google Ad Planner. Google Ad Planner estimates worldwide monthly visitors to Facebook.com to 550 million. This is slightly higher than the 500 million active users Facebook says it has, but …