10. Hootsuite
Web site : Hootsuite.com
Launched : December 2008
CEO : Ryan Holmes
Users : 10 million
Employees : 400+
Alexa rank : 220
Country : United States
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9. Stumbleupon
Web site : Stumbleupon.com
Launched : 2001
CEO : Garrett Camp
Users : 25 million
Alexa rank : 234
Country : Iindia
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8. Badoo
Web site : Badoo.com
Launched : 2006
CEO : Andrey Andre
Users : 230 million
Alexa rank : 212
Country : France
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7. Livejournal
Web site : Livejournal.com
Launched : April 15 1999
CEO : Katya Akudovich
Users : 30 million monthly visitors
Alexa rank : 169
Country : Russia
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6. Flickr
Web site : Flickr.com
Launched : February 10, 2004
CEO : Marissa Mayer
Users : 87 million (March 2013)
Alexa rank : 115
Country : United States
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5. Pinterest
Web site : Pinterest.com
Launched : March 2010
CEO : Ben Silbermann
Users : 53 million monthly active users
Employees : 300+
Alexa rank : 26
Country : United States
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4. Google +
Web site : Plus.google.com
Launched : June 28, 2011
CEO : Larry Page
Users : 540 million (active October 2013)
Employees : 55,030 (Q3 2014)
Country : United States
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3. Linkedin
Web site : linkedin.com
CEO : Jeff Weiner
Launched : December 2002
Users : 300 million
Employees : 5,400 (2014)
Alexa rank : 13
Country : United States
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2. Twitter
Web site : Twitter.com
Launched : March 21, 2006
CEO : Dick Costolo
Users : 271 million active (July 2014)
Employees : 3,300 (2014)
Alexa rank : 8
Country : United States
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1. Facebook
Web site : facebook.com
Founded : February 4 2004
CEO : Mark Zuckerberg
Users : 864 million daily active users (September 2014)
Employees : 8,348 (September 2014)
Alexa rank : 2
Country : United States
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