Top 16 Most Popular Social Bookmarking Websites | February 2013

Here are the Most Popular Social Bookmarking Websites, A Rank which is a constantly updated average of each website's Alexa Global Traffic Rank, and U.S. Traffic Rank from both Compete and Quantcast. "*#*" Denotes an estimate for sites with limited Compete or Quantcast data. If you know a website that should be included on this list based on its traffic rankings

1 | Twitter
250,000,000 - Estimated Unique Monthly Visitors | 30 - Compete Rank | 5 - Quantcast Rank | 9 - Alexa Rank.
2 | Pinterest
85,500,000 - Estimated Unique Monthly Visitors | 42 - Compete Rank | 16 - Quantcast Rank | 36 - Alexa Rank.
3 | Reddit
16,000,000 - Estimated Unique Monthly Visitors | 705 - Compete Rank | 64 - Quantcast Rank | 115 - Alexa Rank.
4 | StumbleUpon
15,000,000 - Estimated Unique Monthly Visitors | 950 - Compete Rank | *150* - Quantcast Rank | 150 - Alexa Rank.
5 | BuzzFeed
14,500,000 - Estimated Unique Monthly Visitors | 419 - Compete Rank | 132 - Quantcast Rank | 632 - Alexa Rank.
6 | Delicious
5,500,000 - Estimated Unique Monthly Visitors | 1,396 - Compete Rank | *870* - Quantcast Rank | 342 - Alexa Rank.
7 | Tweetmeme
5,450,000 - Estimated Unique Monthly Visitors | 1,317 - Compete Rank | 877 - Quantcast Rank | 426 - Alexa Rank.
8 | digg
4,100,000 - Estimated Unique Monthly Visitors | 3,137 - Compete Rank | 430 - Quantcast Rank | 375 - Alexa Rank.
9 | FARK
1,850,000 - Estimated Unique Monthly Visitors | 2,045 - Compete Rank | 1,019 - Quantcast Rank | 2,120 - Alexa Rank.
10 | Slashdot
1,700,000 - Estimated Unique Monthly Visitors | 2,335 - Compete Rank | *1,825* - Quantcast Rank | 1,254 - Alexa Rank.
11 | Friendfeed
1,500,000 - Estimated Unique Monthly Visitors | 4,053 - Compete Rank | *2,400* - Quantcast Rank | 686 - Alexa Rank.
12 | Clipmarks
1,400,000 - Estimated Unique Monthly Visitors | *2,800* - Compete Rank | 1,679 - Quantcast Rank | 3,145 - Alexa Rank.
13 | Newsvine
1,390,000 - Estimated Unique Monthly Visitors | 2,224 - Compete Rank | 2,020 - Quantcast Rank | 3,388 - Alexa Rank.
14 | Diigo
1,200,000 - Estimated Unique Monthly Visitors | 4,765 - Compete Rank | *2,700* - Quantcast Rank | 1,769 - Alexa Rank.
15 | DZone
325,000 - Estimated Unique Monthly Visitors | 9,527 - Compete Rank | *NA* - Quantcast Rank | 3,401 - Alexa Rank.
*16* | Chime.in
250,000 - Estimated Unique Monthly Visitors | 10,357 - Compete Rank | *NA* - Quantcast Rank | 5,825 - Alexa Rank.

Thanks - eBizMBA