Sites
PR
reddit.com
8
tumblr.com
8
friendfeed.com
8
delicious.com
8
stumbleupon.com
8
slashdot.org
7
digg.com
7
newsvine.com
7
fark.com
7
designfloat.com
7
diigo.com
7
bibsonomy.org
7
folkd.com
6
pearltrees.com
6
dropjack.com
6
blinklist.com
6
dzone.com
6
killerstartups.com
5
soup.io
...
