Top 10 Social Bookmark sites

Have you ever wondered wich is the biggest and most popular social bookmark site? I made a list based on unique monthly visitors, PageRank and Alexa Rank that will tell you wich social bookmark sites you should submit your articles too.
10 ) Newsvine
PageRank: 7
Monthly Unique Visitors: 104,117
Alexa Rank: 3,739
9 ) BlinkList
PageRank: 6
Monthly Unique Visitors: 146,858
Alexa Rank: 3,826
8 ) Fark
PageRank: 7
Monthly Unique Visitors: 212,274
Alexa Rank: 1,614
7 ) SlashDot
PageRank: 9
Monthly Unique Visitors: 282,967
Alexa Rank: 462
6 ) Reddit
PageRank: 7
Monthly Unique Visitors: 776,298
Alexa Rank: 838
5 ) StumbleUpon
PageRank: 8
Monthly Unique Visitors: 698,601
Alexa Rank: 316
4 ) Del.icio.us
PageRank: 8
Monthly Unique Visitors: 1,032,489
Alexa Rank: 201
3 ) Technorati
PageRank: 8
Monthly Unique Visitors: 3,563,581
Alexa Rank: 198
2 ) Netscape
PageRank: 9
Unique Monthly Visitors: 5,251,829
Alexa Rank: 562
1 ) Digg
PageRank: 8
Unique Monthly Visitors: 15,647,361
Alexa Rank: 91