I have researched Social Bookmarking websites for you and here is the complete list of Free High PR Do Follow Social Bookmarking sites List.
london8.net/
wirefan.com/
dictaf.net/
jofrati.net/
t3b-system.com/
gardicanin.net
usefulenglish.net
relevare.net/
todays1051.net/
temateater.net/
aixindashi.org/
gen-eff.net/
vtv10.com/
youmob.com/
tatvanstories.com/
gardicanin.net/
pixador.net/
atlasassistans.net/
usefulenglish.net/
addusastory.com/
dzone.com
bjwhj.com/
url.org/
cocosislandsnews.info
jodohkita.info/
airpim.biz/
prbookmarks.com/
bookmark4you.com/
craftjuice.com/
linkr.hu/
acymca.net/
designfloat.com/
yemle.com/
zariaetan.com/
eugendorf.net
openfaves.com/
sitejot.com/
tourdion.com/
postolia.com/
addthismark.com/
yoomark.com/
bookmarkingcentral.com
stumbleupon.com/
reddit.com/
citeulike.org/
delicious.com/
pinterest.com/
tumblr.com/
diigo.com/
slashdot.org/
google.com/bookmarks/
newsvine.com/
digg.com/
bibsonomy.org/
tryengineeringnews.org/
folkd.com/
pearltrees.com/
independencescience.co/
hollywood2012.com/
wegokiev.com/
fossilafrica.com/
kbrabbitry.com/
bizsugar.com/
iesa.co/
fearsteve.com/
ihaan.org/
bosplus.org/
esa-2013.com/
immigrationlawpros.com/
speedycon.org/
utoms.org/
atlhtml5.net/