That works out to about 343 million active users of Google+, and a little under 300 million active users for Twitter and YouTube. Facebook has been able to combat what GWI called “Facebook fatigue” and saturation and achieve about 33% growth. Based on the markets surveyed and estimates of other markets not included in their report, GWI believes that Facebook’s claims of 1 billion users is more or less on target.
Google surpasses Twitter to take number 2 social network after Facebook
By pachanka
30 - January - 2013