1 | digg.com
383,598,000 - Inbound Links | 33,433,760 - Compete Monthly Visitors | 11,400,000 - Quantcast Monthly Visitors | 183 - Alexa Ranking.
2 | Yahoo! Buzz
6,031,000 - Inbound Links | NA - Compete Monthly Visitors | 3,600,000 - Quantcast Monthly Visitors | NA - Alexa Ranking.
3 | StumbleUpon.com
234,000,000 - Inbound Links | 4,418,609 - Compete Monthly Visitors | 1,100,000 - Quantcast Monthly Visitors | 362 - Alexa Ranking.
4 | reddit.com
161,685,000 - Inbound Links | 4,908,990 - Compete Monthly Visitors | 1,300,000 - Quantcast Monthly Visitors | 441 - Alexa Ranking.
5 | Technorati.com
175,287,000 - Inbound Links | 3,309,174 - Compete Monthly Visitors | 2,000,000 - Quantcast Monthly Visitors | 662 - Alexa Ranking.
6 | del.icio.us
427,665,000 - Inbound Links | 1,623,083 - Compete Monthly Visitors | 317,000 - Quantcast Monthly Visitors | 2,476 - Alexa Ranking.
7 | kaboodle.com
2,600,000 - Inbound Links | 3,941,212 - Compete Monthly Visitors | 2,500,000 - Quantcast Monthly Visitors | 1,694 - Alexa Ranking.
8 | mixx.com
16,005,000 - Inbound Links | 879,108 - Compete Monthly Visitors | 2,200,000 - Quantcast Monthly Visitors | 645 - Alexa Ranking.
9 | Propeller.com
5,725,000 - Inbound Links | 1,164,549 - Compete Monthly Visitors | 624,000 - Quantcast Monthly Visitors | 1,801 - Alexa Ranking.
10 | newsvine.com
71,708,775 - Inbound Links | 1,142,779 - Compete Monthly Visitors | 1,300,000 - Quantcast Monthly Visitors | 5,545 - Alexa Ranking.
11 | Fark.com
36,162,723 - Inbound Links | 652,762 - Compete Monthly Visitors | 1,300,000 - Quantcast Monthly Visitors | 4,119 - Alexa Ranking.
12 | Slashdot.org
37,566,035 - Inbound Links | 862,416 - Compete Monthly Visitors | 404,000 - Quantcast Monthly Visitors | 970 - Alexa Ranking.
13 | twine.com
343,090 - Inbound Links | 1,062,304 - Compete Monthly Visitors | 188,000 - Quantcast Monthly Visitors | 19,592 - Alexa Ranking.
14 | clipmarks.com
461,141 - Inbound Links | 379,354 - Compete Monthly Visitors | 507,000 - Quantcast Monthly Visitors | 6,330 - Alexa Ranking.
15 | dzone.com
3,867,009 - Inbound Links | 281,098 - Compete Monthly Visitors | 208,000 - Quantcast Monthly Visitors | 7,002 - Alexa Ranking.
16 | faves.com
1,437,453 - Inbound Links | 159,051 - Compete Monthly Visitors | 244,000 - Quantcast Monthly Visitors | 6,198 - Alexa Ranking.
17 | blinklist.com
51,912,576 - Inbound Links | 86,650 - Compete Monthly Visitors | 44,000 - Quantcast Monthly Visitors | 10,985 - Alexa Ranking.
18 | diigo.com
8,933,453 - Inbound Links | 146,144 - Compete Monthly Visitors | 30,000 - Quantcast Monthly Visitors | 7,569 - Alexa Ranking.
19 | simpy.com
25,805,730 - Inbound Links | 54,581 - Compete Monthly Visitors | 39,600 - Quantcast Monthly Visitors | 19,964 - Alexa Ranking.
20 | BlogMarks.net
21,776,453 - Inbound Links | 40,967 - Compete Monthly Visitors | 10,500 - Quantcast Monthly Visitors | 29,744 - Alexa Ranking.