+Google+ growth since the beginning
Impressive growth!

These are the total numbers of users. And I am impressed with the growth we have seen in the last 5 months. I guess that there are several reasons to it:
- Constant push to upgrade your Google-account to Google+
- Presence of +The Olympic Games on Google+
- Opening up Hangout-on-Air for all and adding studio mode
- Google+ teaming up with +NFL
- Anything else you can think of?

Today's announcement by +Vic Gundotra on 400 million users:

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