Google Senior Vice President of Engineering Vivek Gundotra announced on his Google+ page that the search giant's social networking website now has over 400 million users. He adds that about one fourth of these are monthly active users. The 400 million mark represents a growth of 150 million users since mid-July, when Google announced to have reached the 250 million user milestone.
This week we also hit an important milestone--over 400,000,000 people have upgraded to Google+. It was only a year ago that we opened public sign-up, and we couldn’t have imagined that so many people would join in just 12 months. While Google+ is all about creating a better experience across Google, it’s also a destination. And here too, I’m happy to report that we have just crossed 100,000,000 monthly active users on Google+ (plus.google.com and mobile app).
Facebook remains social king with over 1 billion monthly active users, and over half of these are claimed to be daily users.