Google+ was the fastest social network to reach 10 million users at 16 days (Twitter took 780 days and Facebook 852 days) from http://www.jeffbullas.com/2011/09/02/20-stunning-social-media-statistics/
Complete Guide to Google Plus Posts and Photos by Martin Shervington
Google+ was the fastest social network to reach 10 million users at 16 days (Twitter took 780 days and Facebook 852 days) from http://www.jeffbullas.com/2011/09/02/20-stunning-social-media-statistics/