Search:

reddit.com
scoop.it
plurk.com
diigo.com
delicious.com
folkd.com
youmob.com
url.org
slashdot.org
pinterest.com

Below all high page rank top 10 bookmarking sites.

https://www.reddit.com/
http://www.scoop.it/
http://www.plurk.com/top/
https://www.diigo.com/
http://delicious.com/
http://www.folkd.com/...