Search engine optimization (SEO)

This March 2009 a new suryvey was made on the social bookmarking sites by the Alexa and US traffic data .

According to the survey , the top 20 largest social book marking sites are


digg.com
560,598,000 - Inbound Links | 33,432,650 - Compete Monthly Visitors | 12,200,000 - Quantcast Monthly Visitors | 284 - Alexa Ranking.




Yahoo! Buzz
4,231,000 - Inbound Links | NA - Compete Monthly Visitors | 4,000,000 - Quantcast Monthly Visitors | NA - Alexa Ranking.



Technorati.com
250,287,000 - Inbound Links | 2,259,592 - Compete Monthly Visitors | 2,300,000 - Quantcast Monthly Visitors | 457 - Alexa Ranking.




StumbleUpon.com
305,000,000 - Inbound Links | 4,209,353 - Compete Monthly Visitors | 978,000 - Quantcast Monthly Visitors | 939 - Alexa Ranking.

606,665,000 - Inbound Links | 1,704,343 - Compete Monthly Visitors | 325,000 - Quantcast Monthly Visitors | 2,648 - Alexa Ranking.



kaboodle.com
3,693,000 - Inbound Links | 4,903,654 - Compete Monthly Visitors | 3,400,000 - Quantcast Monthly Visitors | 1,422 - Alexa Ranking.




reddit.com
210,685,000 - Inbound Links | 3,807,418 - Compete Monthly Visitors | 1,200,000 - Quantcast Monthly Visitors | 4,815 - Alexa Ranking.




mixx.com
17,326,000 - Inbound Links | 961,684 - Compete Monthly Visitors | 2,100,000 - Quantcast Monthly Visitors | 673 - Alexa Ranking.




Propeller.com
5,903,000 - Inbound Links | 1,080,258 - Compete Monthly Visitors | 773,000 - Quantcast Monthly Visitors | 2,252 - Alexa Ranking.




Fark.com
55,162,723 - Inbound Links | 450,773 - Compete Monthly Visitors | 1,300,000 - Quantcast Monthly Visitors | 6,550 - Alexa Ranking.




newsvine.com
90,708,775 - Inbound Links | 744,534 - Compete Monthly Visitors | 768,000 - Quantcast Monthly Visitors | 7,106 - Alexa Ranking.





| Slashdot.org
62,071,035 - Inbound Links | 881,082 - Compete Monthly Visitors | 461,000 - Quantcast Monthly Visitors | 10,512 - Alexa Ranking.



clipmarks.com
765,141 - Inbound Links | 409,530 - Compete Monthly Visitors | 552,000 - Quantcast Monthly Visitors | 6,294 - Alexa Ranking.




Furl.net
170,628,144 - Inbound Links | 173,364 - Compete Monthly Visitors | 85,500 - Quantcast Monthly Visitors | 21,691 - Alexa Ranking.




faves.com
2,067,453 - Inbound Links | 157,420 - Compete Monthly Visitors | 232,000 - Quantcast Monthly Visitors | 8,846 - Alexa Ranking.




dzone.com
4,933,009 - Inbound Links | 222,058 - Compete Monthly Visitors | 193,000 - Quantcast Monthly Visitors | 46,502 - Alexa Ranking.




blinklist.com
78,582,576 - Inbound Links | 95,238 - Compete Monthly Visitors | 50,000 - Quantcast Monthly Visitors | 28,616 - Alexa Ranking.




ma.gnolia.com
60,917,444 - Inbound Links | 89,558 - Compete Monthly Visitors | 18,300 - Quantcast Monthly Visitors | 79,651 - Alexa Ranking.





simpy.com
37,090,730 - Inbound Links | 55,396 - Compete Monthly Visitors | 42,000 - Quantcast Monthly Visitors | 65,050 - Alexa Ranking.


BlogMarks.net
31,281,453 - Inbound Links | 36,048 - Compete Monthly Visitors | 9,500 - Quantcast Monthly Visitors | 42,675 - Alexa Ranking.