Best Social Networking Site Directory

Participating in social groups / networking sites are guaranteed to give boost to your traffic. Here is my list of the best social sites sorted by Page Rank:

PR 9

http://www.netscape.com
http://www.slashdot.org

PR 8

http://www.digg.com
http://del.icio.us
http://www.furl.net
http://technorati.com
http://www.stumbleupon.com
http://www.rojo.com
http://www.squidoo.com

PR 7

http://myweb2.search.yahoo.com
http://reddit.com
http://www.fark.com
http://www.43things.com
http://www.mister-wong.de
http://de.lirio.us
http://www.newsvine.com
http://www.blogmarks.net
http://ma.gnolia.com
http://www.simpy.com
http://www.citeulike.org
http://www.nowpublic.com
http://www.rollyo.com
http://www.jeteye.com
http://www.blogpulse.com
http://www.icerocket.com
http://kinja.com
http://www.kuro5hin.org
http://www.tailrank.com
http://meneame.net
http://www.clipfire.com

PR 6

http://www.shoutwire.com
http://www.spurl.net
http://bluedot.us
http://www.blinkbits.com
http://www.blinklist.com
http://netvouz.com
http://www.trailfire.com
http://www.backflip.com
http://www.shadows.com
http://www.backflip.com
http://www.blinklist.com
http://www.blinkbits.com
http://www.blogmarks.net
http://www.diigo.com
http://www.feedmarker.com
http://linkfilter.net
http://www.netvouz.com
http://www.spurl.net
http://adoppt.com
http://www.gather.com
http://www.backflip.com
http://www.bloghop.com
http://www.wurldbook.com/info
http://www.clipclip.org
http://www.clipmarks.com
http://www.rawsugar.com
http://www.linkarena.com
http://www.listible.com
http://popurls.com
http://thumblicio.us
http://dev.upian.com/hotlinks/(source list is currently frozen for a while)

PR 5

http://www.spotback.com
http://www.corank.com
http://www.ambedo.com
http://www.blogmemes.net
http://www.feedalley.com
http://www.gravee.com
http://www.lifelogger.com
http://www.linkagogo.com
http://www.millionsofgames.com
http://www.myhq.com
http://www.mylinkvault.com
http://www.myvmarks.com
http://www.openbm.de
http://tags.library.upenn.edu
http://www.peoplefeeds.com
http://www.phigita.net
http://www.pligg.com
http://segnalo.alice.it
http://www.stylehive.com
http://unalog.com
http://buddymarks.com
http://www.hanzoweb.com
http://www.linkroll.com
http://supr.c.ilio.us
http://www.butterflyproject.nl
http://www.Givealink.org
http://www.favoor.com
http://www.lilisto.com
http://linkatopia.com
http://www.markaboo.com
http://uvouch.com
http://www.tagtooga.com/db.tag