Top 10 Most Popular Social Networking Websites

1 | Facebook

550,000,000 - Estimated Unique Monthly Visitors | 3 - Compete Rank | 2 - Quantcast Rank | 2 - Alexa Rank.

2 | Twitter

180,000,000 - Estimated Unique Monthly Visitors | 30 - Compete Rank | 5 - Quantcast Rank | 9 - Alexa Rank.

3 | LinkedIn

100,000,000 - Estimated Unique Monthly Visitors | 57 - Compete Rank | 26 - Quantcast Rank | 17 - Alexa Rank.




4 | MySpace

80,500,000 - Estimated Unique Monthly Visitors | 26 - Compete Rank | 44 - Quantcast Rank | 79 - Alexa Rank.


5 | Ning

60,000,000 - Estimated Unique Monthly Visitors | 180 - Compete Rank | 120 - Quantcast Rank | 128 - Alexa Rank.




6 | Tagged

25,000,000 - Estimated Unique Monthly Visitors | 382 - Compete Rank | 151 - Quantcast Rank | 141 - Alexa Rank.



7 | orkut

15,500,000 - Estimated Unique Monthly Visitors | *570* - Compete Rank | *540* - Quantcast Rank | 93 - Alexa Rank.


8 | hi5

11,500,000 - Estimated Unique Monthly Visitors | 983 - Compete Rank | 392 - Quantcast Rank | 62 - Alexa Rank.

9 | myyearbook

7,450,000 - Estimated Unique Monthly Visitors | 522 - Compete Rank | 293 - Quantcast Rank | 1,036 - Alexa Rank. 

10 | Meetup

7,200,000 - Estimated Unique Monthly Visitors | 644 - Compete Rank | 732 - Quantcast Rank | 528 - Alexa Rank.