Top 15 Most Popular Social Networking Websites | April 2011

Here are the 15 Most Popular Social Networking Websites as derived from our eBizMBA Rank which is an average of each website's Alexa Global Traffic Rank, and U.S. Traffic Rank from both Compete and Quantcast. "*#*" Denotes an estimated Quantcast rank for websites yet to be Quantified.
1 | facebook
2 - eBizMBA Rank | 550,000,000 - Estimated Unique Monthly Visitors | 3 - Compete Rank | 2 - Quantcast Rank | 2 - Alexa Rank.
Most Popular Social Networking Websites | Updated 4/20/2011 | eBizMBA

2 | twitter
17 - eBizMBA Rank | 95,800,000 - Estimated Unique Monthly Visitors | 35 - Compete Rank | 7 - Quantcast Rank | 10 - Alexa Rank.
Most Popular Social Networking Websites | Updated 4/20/2011 | eBizMBA

3 | MySpace
34 - eBizMBA Rank | 80,500,000 - Estimated Unique Monthly Visitors | 20 - Compete Rank | 25 - Quantcast Rank | 56 - Alexa Rank.
Most Popular Social Networking Websites | Updated 4/20/2011 | eBizMBA

4 | Linkedin
47 - eBizMBA Rank | 50,000,000 - Estimated Unique Monthly Visitors | 61 - Compete Rank | 50 - Quantcast Rank | 29 - Alexa Rank.
Most Popular Social Networking Websites | Updated 4/20/2011 | eBizMBA


5 | Ning
143 - eBizMBA Rank | 42,000,000 - Estimated Unique Monthly Visitors | 180 - Compete Rank | 120 - Quantcast Rank | 128 - Alexa Rank.
Most Popular Social Networking Websites | Updated 4/20/2011 | eBizMBA

6 | Tagged
225 - eBizMBA Rank | 30,000,000 - Estimated Unique Monthly Visitors | 382 - Compete Rank | 151 - Quantcast Rank | 141 - Alexa Rank.
Most Popular Social Networking Websites | Updated 4/20/2011 | eBizMBA

7 | hi5
479 - eBizMBA Rank | 27,000,000 - Estimated Unique Monthly Visitors | 983 - Compete Rank | 392 - Quantcast Rank | 62 - Alexa Rank.
Most Popular Social Networking Websites | Updated 4/20/2011 | eBizMBA

8 | myyearbook
617 - eBizMBA Rank | 12,000,000 - Estimated Unique Monthly Visitors | 522 - Compete Rank | 293 - Quantcast Rank | 1,036 - Alexa Rank.
Most Popular Social Networking Websites | Updated 4/20/2011 | eBizMBA

9 | Meetup
635 - eBizMBA Rank | 8,000,000 - Estimated Unique Monthly Visitors | 644 - Compete Rank | 732 - Quantcast Rank | 528 - Alexa Rank.
Most Popular Social Networking Websites | Updated 4/20/2011 | eBizMBA

10 | bebo
655 - eBizMBA Rank | 7,000,000 - Estimated Unique Monthly Visitors | 944 - Compete Rank | 434 - Quantcast Rank | 588 - Alexa Rank.
Most Popular Social Networking Websites | Updated 4/20/2011 | eBizMBA

11 | mylife
865 - eBizMBA Rank | 6,000,000 - Estimated Unique Monthly Visitors | 118 - Compete Rank | 688 - Quantcast Rank | 1,789 - Alexa Rank.
Most Popular Social Networking Websites | Updated 4/20/2011 | eBizMBA

12 | friendster
955 - eBizMBA Rank | 5,000,000 - Estimated Unique Monthly Visitors | 1,920 - Compete Rank | 643 - Quantcast Rank | 301 - Alexa Rank.
Most Popular Social Networking Websites | Updated 4/20/2011 | eBizMBA

13 | myHeritage
1,097 - eBizMBA Rank | 4,800,000 - Estimated Unique Monthly Visitors | 707 - Compete Rank | 595 - Quantcast Rank | 1,989 - Alexa Rank.
Most Popular Social Networking Websites | Updated 4/20/2011 | eBizMBA

14 | Multiply
1,136 - eBizMBA Rank | 4,600,000 - Estimated Unique Monthly Visitors | 2,446 - Compete Rank | 677 - Quantcast Rank | 285 - Alexa Rank.
Most Popular Social Networking Websites | Updated 4/20/2011 | eBizMBA

15 | orkut
1,303 - eBizMBA Rank | 4,500,000 - Estimated Unique Monthly Visitors | 2,219 - Compete Rank | *1,630* - Quantcast Rank | 59 - Alexa Rank.
Most Popular Social Networking Websites | Updated 4/20/2011 | eBizMBA