Do you want some backlinks? Of course you do! More backlinks = More traffic. Even if they have a nofollow-tag you can still get traffic directly from that link and noone really knows if Google still add value to your site from nofollow-backlinks.
These social bookmarking sites are listed by pagerank:
http://facebook.com 9 http://slashdot.org 9 http://technorati.com 9 http://del.icio.us 8 http://digg.com 8 http://mixx.com 8 http://propeller.com 8 http://reddit.com 8 http://stumbleupon.com 8 http://blinklist.com 7 http://folkd.com 7 http://foxiewire.com 7 http://google.com/bookmarks 7 http://mister-wong.com 7 http://newsvine.com 7 http://sphere.com 7 http://squidoo.com 7 http://wikio.com 7 http://bibsonomy.org 6 http://blogcatalog.com 6 http://diigo.com 6 http://dzone.com 6 http://faves.com 6 http://findnews.org 6 http://jumptags.com 6 http://kwoff.com 6 http://ma.gnolia.com 6 http://onlywire.com 6 http://pusha.se 6 http://scoopit.co.nz 6 http://simpy.com 6 http://sphinn.com 6 http://tipd.com 6 http://co.mments.com 5 http://designfloat.com 5 http://fcc.com 5 http://gabbr.com 5 http://givealink.org 5 http://haohaoreport.com 5 http://indianpad.com 5 http://joomocracy.com 5 http://kirtsy.com 5 http://linkagogo.com 5 http://linkarena.com 5 http://linkswarm.com 5 http://mobiseer.com 5 http://myhq.com 5 http://myjeeves.ask.com 5 http://mylinkvault.com 5 http://netvouz.com 5 http://plime.com 5 http://quadriot.com 5 http://searchles.com 5 http://shoutwire.com 5 http://spotback.com 5 http://spurl.net 5 http://startaid.com 5 http://swik.net 5 http://tagza.com 5 http://url.org 5 http://web2list.com 5 http://weblinkr.com 5 http://a1-webmarks.com 4 http://babblestorm.co.uk 4 http://blogmemes.net 4 http://blurpalicious.com 4 http://bmaccess.net 4 http://bookmarks.oneindia.in 4 http://dnhour.com 4 http://dropjack.com 4 http://fark.com 4 http://favoor.com 4 http://foundit.open.ac.uk 4 http://getboo.com 4 http://humsurfer.com 4 http://indiareporting.com 4 http://jeqq.com 4 http://justpoint.org 4 http://listerlister.com 4 http://mysitevote.com 4 http://online-bookmarks.com 4 http://oyax.com 4 http://pageactive.org 4 http://pagestacker.com 4 http://philoi.com 4 http://sitejot.com 4 http://socialdanger.com 4 http://solinkable.com 4 http://therealpassport.com 4 http://topinews.com 4 http://totalpad.com 4 http://uvouch.com 4 http://wagg.it 4 http://aboogy.com 3 http://affiliated-business.com 3 http://ausculture.com 3 http://blogbookmark.com 3 http://bookmark-site.com 3 http://bookmark4you.com 3 http://bringr.com 3 http://craftjuice.com 3 http://dekut.com 3 http://earthfrisk.com 3 http://easymash.com 3 http://fuzzfizz.com 3 http://geordies.net 3 http://googletop.net 3 http://idiomato.com 3 http://indiamarks.com 3 http://informednetworker.com 3 http://joseluispretto.com 3 http://kikono.org 3 http://koolontheweb.com 3 http://malaysiastory.com 3 http://mycartel.co.uk 3 http://newsgarbage.com 3 http://newsmeback.com 3 http://newzly.com 3 http://oks.ph 3 http://oopza.com 3 http://panamanewsblog.com 3 http://pfbuzz.com 3 http://pinoymug.com 3 http://plugim.com 3 http://postonfire.com 3 http://pr4links.com 3 http://q8igg.com 3 http://rambhai.com 3 http://rankalo.net 3 http://restnews.com 3 http://rumorshare.com 3 http://socialmedia1.com 3 http://socialogs.com 3 http://subbitt.com 3 http://syncone.net 3 http://tagne.ws 3 http://toxiclemon.co.uk 3 http://v0v.com 3 http://webmaster911.com 3 http://wirefan.com 3 http://wobblog.com 3 http://womcat.org 3 http://actionnooz.com 2 http://addthisto.com 2 http://bestofindya.com 2 http://blogcharts.net 2 http://bookmarkindo.com 2 http://bookmarksync.com 2 http://bookmarkus.eu 2 http://bukmark.net 2 http://business-planet.net 2 http://cadillactight.net 2 http://choowawa.com 2 http://citijournalist.com 2 http://cmymark.com 2 http://digg.design.fr 2 http://diggdirect.com 2 http://dizzed.com 2 http://efixx.com 2 http://elmera.com 2 http://fashionablylatent.com 2 http://forexindexy.com 2 http://fr8mvr.com 2 http://freearticlelive.com 2 http://gaddiposh.com 2 http://getigadget.com 2 http://gps.spotshoppingguide.com 2 http://growthbubble.com 2 http://gruks.com 2 http://gyach.com 2 http://gyanin.com 2 http://indiantags.com 2 http://indimine.com 2 http://indopligg.gofreeserve.com 2 http://ipopu.com 2 http://it-ideas.com 2 http://justtech.org 2 http://letsdobookmark.com 2 http://linkets.com 2 http://linksmarker.com 2 http://linksprocket.com 2 http://mashfactor.com 2 http://maxtags.com 2 http://newscola.com 2 http://newsqb.com 2 http://newsroom.ie 2 http://onlinesocialbookmarkin.com 2 http://paie.cn 2 http://persianhaps.com 2 http://pillfish.net 2 http://pinoybee.com 2 http://pligg.scrum-on.com 2 http://politicsnews.ca 2 http://starton.us 2 http://stirrdup.com 2 http://strictly.ca 2 http://subbmitt.com 2 http://subjoin.su.funpic.de 2 http://surfurls.com 2 http://tabletpccounter.com 2 http://tabmarks.com 2 http://th3scoop.com 2 http://tungaw.com 2 http://uan.me 2 http://urlpix.com 2 http://veryhotlinks.com 2 http://webgare.com 2 http://wedelia.com 2 http://xmaui.com 2 http://yeawo.com 2 http://yomash.com 2 http://yoorl.com 2 http://7878748.com 1 http://actualtopics.com 1 http://article-publishers.com 1 http://astoreseo.com 1 http://bharatinfo.com 1 http://bittorrental.com 1 http://blessedit.com 1 http://blizzardzz.com 1 http://blogadeal.com 1 http://bolsayfinanzas.com 1 http://bookmarkall.com 1 http://bookmarkglobe.com 1 http://bookmarkplace.com 1 http://brightsapphire.com 1 http://buzzingtopics.com 1 http://celebhungama.com 1 http://clixwlix.com 1 http://confer.com.au 1 http://digimoe.com 1 http://digufun.com 1 http://dua4me.com 1 http://elementalscape2.com 1 http://fantasysportsexperts.com 1 http://freebiesup.com 1 http://gadgetsieve.com 1 http://gobigg.com 1 http://gogurl.com 1 http://homebusinessvoices.com 1 http://hotbuzz.in 1 http://indianpick.com 1 http://indiarooster.com 1 http://iorkut.net 1 http://jackool.com 1 http://keplaza.com 1 http://kulapo.com 1 http://laflink.com 1 http://latestramblings.com 1 http://listofadvertisers.com 1 http://listyoururl.com 1 http://malaysiastory.net 1 http://myfavlinks.com 1 http://mypinkcheese.com 1 http://newsfinda.com 1 http://newskicks.com 1 http://nunag.com 1 http://oldrec.com 1 http://plibb.com 1 http://pluggos.com 1 http://qiel.com 1 http://rockvibes.net 1 http://scuttleplus.com 1 http://sharelinks.eu 1 http://sitesmash.com 1 http://socialbookmarksite.com 1 http://sokmotortoppen.net 1 http://spotonce.com 1 http://startator.com 1 http://suchtrend.info 1 http://taggar.be 1 http://tagitect.com 1 http://takemetop.com 1 http://taxonomies.info 1 http://techinreview.com 1 http://thezer0.com 1 http://topstumbles.com 1 http://upp.me 1 http://venture-buzz.com 1 http://vindianz.com 1 http://vote.my 1 http://votedlinks.com 1 http://votocilina.com 1 http://webpics.info 1 http://whatnwhen.in 1 http://wirepost.com 1 http://yeahmaybenot.com 1 http://youkome.com 1 http://zeezag.com 1 http://zippe.net 1 http://addictionaire.com 0 http://altnewsonline.com 0 http://b2blocal.net 0 http://biggitup.com 0 http://blogreporter.biz 0 http://blurp.co.za 0 http://bookfox.org 0 http://bookmarkus.net 0 http://bujjo.com 0 http://buknoy.com 0 http://clickfor.net 0 http://cloudytags.com 0 http://coinopia.com 0 http://coolsearchinfo.com 0 http://desigrade.com 0 http://dewfun.com 0 http://diggislam.com 0 http://dofollow.us 0 http://earnersclub.net 0 http://flyerfi.com 0 http://goldenbookmarks.com 0 http://harrrd.com 0 http://highvibeit.com 0 http://i89.us 0 http://ilovethislife.net 0 http://indiasphere.net 0 http://kablogs.com 0 http://kabulis.com 0 http://kabuls.com 0 http://ladykillr.com 0 http://letslogin.com 0 http://lifeinnews.com 0 http://maple.nu 0 http://mecozz.com 0 http://moogme.com 0 http://news.bramptonregister.com 0 http://opfiles.com 0 http://pligg.bloggrove.com 0 http://potongstim.com 0 http://saysaid.com 0