Top 15 Most Popular Social Networking Sites | April 2014

1 | Facebook
 900,000,000 - Estimated Unique Monthly Visitors | 3 - Compete Rank | 3 - Quantcast Rank | 2 - Alexa Rank | Updated: April 1, 2014.

2 | Twitter
 310,000,000 - Estimated Unique Monthly Visitors | 25 - Compete Rank | 5 - Quantcast Rank | 11 - Alexa Rank | Updated: April 1, 2014.

3 | LinkedIn
 250,000,000 - Estimated Unique Monthly Visitors | 38 - Compete Rank | 19 - Quantcast Rank | 13 - Alexa Rank | Updated: April 1, 2014.

4 | Pinterest
 150,000,000 - Estimated Unique Monthly Visitors | 32 - Compete Rank | 14 - Quantcast Rank | 29 - Alexa Rank | Updated: April 1, 2014.

5 | Google Plus+
 120,000,000 - Estimated Unique Monthly Visitors | *32* - Compete Rank |*28* - Quantcast Rank | NA - Alexa Rank | Updated: April 1, 2014.

6 | Tumblr
 110,000,000 - Estimated Unique Monthly Visitors | 58 - Compete Rank | 13 - Quantcast Rank | 35 - Alexa Rank | Updated: April 1, 2014.

7 | Instagram
 85,000,000 - Estimated Unique Monthly Visitors | 51 - Compete Rank | 126 - Quantcast Rank | 38 - Alexa Rank | Updated: April 1, 2014.

8 | VK
 80,000,000 - Estimated Unique Monthly Visitors | *150* - Compete Rank |*120* - Quantcast Rank | 26 - Alexa Rank | Updated: April 1, 2014.

9 | Flickr
 65,000,000 - Estimated Unique Monthly Visitors | 133 - Compete Rank | 93- Quantcast Rank | 82 - Alexa Rank | Updated: April 1, 2014.

10 | MySpace
345 - eBizMBA Rank | 40,000,000 - Estimated Unique Monthly Visitors | 21 - Compete Rank | 131- Quantcast Rank | 884 - Alexa Rank | Updated: April 1, 2014.

11 | Tagged
 38,000,000 - Estimated Unique Monthly Visitors | 876 - Compete Rank |425 - Quantcast Rank | 338 - Alexa Rank | Updated: April 1, 2014.

12 | Ask.fm
 37,000,000 - Estimated Unique Monthly Visitors | 1,536 - Compete Rank |103 - Quantcast Rank | 155 - Alexa Rank | Updated: April 1, 2014.

13 | Meetup
 35,000,000 - Estimated Unique Monthly Visitors | 974 - Compete Rank |643 - Quantcast Rank | 369 - Alexa Rank | Updated: April 1, 2014.

14 | MeetMe
 10,500,000 - Estimated Unique Monthly Visitors | 1,304 - Compete Rank |200 - Quantcast Rank | 1,983 - Alexa Rank | Updated: April 1, 2014.

15 | ClassMates
 10,000,000 - Estimated Unique Monthly Visitors | 129 - Compete Rank |285 - Quantcast Rank | 3,165 - Alexa Rank | Updated: April 1, 2014.