30 Largest Social Bookmarking Site part 2

11- Slashdot.org
Inbound Links : 13,555,035
Compete Monthly Visitors : 724,424
Quantcast Monthly Visitors : 269,884
Alexa Ranking : 579
Page Rank : 9

12- kaboodle.com
Inbound Links : 100,266
Compete Monthly Visitors : 1,751,763
Quantcast Monthly Visitors : 851,858
Alexa Ranking : 9,125
Page Rank : 6

13- Bloglines.com
Inbound Links : 50,717,948
Compete Monthly Visitors : 382,663
Quantcast Monthly Visitors : 103,711
Alexa Ranking : 853
Page Rank : 9

14- newsvine.com
Inbound Links : 24,200,775
Compete Monthly Visitors : 315,857
Quantcast Monthly Visitors : 203,761
Alexa Ranking : 3,977
Page Rank : 7

15- blinklist.com
Inbound Links : 23,770,576
Compete Monthly Visitors : 243,277
Quantcast Monthly Visitors : 165,306
Alexa Ranking : 4,647
Page Rank : 6

16- netvouz.com
Inbound Links : 8,112,272
Compete Monthly Visitors : 75,507
Quantcast Monthly Visitors : 54,325
Alexa Ranking : 15,048
Page Rank : 6

17- clipmarks.com
Inbound Links : 164,419
Compete Monthly Visitors : 196,107
Quantcast Monthly Visitors : 147,131
Alexa Ranking : 6,740
Page Rank : 6

18- Furl.net
Inbound Links : 49,595,144
Compete Monthly Visitors : 148,975
Quantcast Monthly Visitors : 57,547
Alexa Ranking : 4,112
Page Rank : 8

19- Mister-Wong
Inbound Links : 13,214,146
Compete Monthly Visitors : 25,416
Quantcast Monthly Visitors : 3,432
Alexa Ranking : 1,889
Page Rank : 7

20- dzone.com
Inbound Links : 1,065,009
Compete Monthly Visitors : 100,784
Quantcast Monthly Visitors : 117,897
Alexa Ranking : 5,187
Page Rank : 6

Wait For part 3.
If you want to check the whole list visit : eBizMBA

30 Largest Social Bookmarking Site part 1

According To Wikipedia Social bookmarking is:a method for Internet users to store, organize, search, and manage bookmarks of web pages on the Internet with the help of metadata.

In a social bookmarking system, users save links to web pages that they want to remember and/or share. These bookmarks are usually public, and can be saved privately, shared only with specified people or groups, shared only inside certain networks, or another combination of public and private domains. The allowed people can usually view these bookmarks chronologically, by category or tags, or via a search engine.
Many social bookmarking services provide web feeds for their lists of bookmarks, including lists organized by tags. This allows subscribers to become aware of new bookmarks as they are saved, shared, and tagged by other users.

1- Digg
Inbound Links :382,792,751
Compete Monthly Visitors :22,578,945
Quantcast Monthly Visitors :10,300,000
Alexa Ranking : 124
Page Rank : 8

2- Yahoo! Buzz
Inbound Links :900,571
Compete Monthly Visitors :128,556,575
Quantcast Monthly Visitors : 2,500,000
Alexa Ranking : 1
Page Rank : 6

3-Technorati.com
Inbound Links : 75,306,437
Compete Monthly Visitors : 3,231,709
Quantcast Monthly Visitors : 1,400,000
Alexa Ranking : 216
Page Rank : 8

4- del.icio.us
Inbound Links : 171,593,051
Compete Monthly Visitors : 1,699,128
Quantcast Monthly Visitors : 1,300,000
Alexa Ranking : 248
Page Rank : 8

5- Propeller.com
Inbound Links : 997,000
Compete Monthly Visitors : 1,454,912
Quantcast Monthly Visitors : 2,180,176
Alexa Ranking : 2,308
Page Rank : 7

6- StumbleUpon.com
Inbound Links : 19,050,177
Compete Monthly Visitors : 1,313,586
Quantcast Monthly Visitors : 695,239
Alexa Ranking : 300
Page Rank : 8

7- reddit.com
Inbound Links : 45,307,577
Compete Monthly Visitors : 2,587,503
Quantcast Monthly Visitors : 344,383
Alexa Ranking : 852
Page Rank : 7

8- mixx.com
Inbound Links : 6,175,082
Compete Monthly Visitors : 507,100
Quantcast Monthly Visitors : 475,000
Alexa Ranking : 1,880
Page Rank : 7

9- Fark.com
Inbound Links : 11,438,723
Compete Monthly Visitors : 306,597
Quantcast Monthly Visitors : 1,767,165
Alexa Ranking : 1,958
Page Rank : 7

10- MyBlogLog.com
Inbound Links :1,742,265
Compete Monthly Visitors : 1,972,847
Quantcast Monthly Visitors : 84,922
Alexa Ranking : 432
Page Rank : 7

Wait For part 2.
If you want to check the whole list visit : eBizMBA