I won't say that it's the best .. but this is what I use It's one of the better ones! http://www.vmoptions.com/social-networking-list.php
here are my list of Social Bookmarking Sites: http://seotips4free.blogspot.com/2008/03/150-social-bookmarking-sites.html
I use socialposter.com, socialmarker and posttoaster. By the way, submitterbot by triphp123 looks promising--I just checked it out.
have a list for Social book marking have a look i think it's great list. 1 del.icio.us/ 2 hdigg.com/ 3 blinklist.com/ 4 ma.gnolia.com/ 5 furl.net/ 6 diigo.com/ 7 complore.com/ 8 tallstreet.com/ 9 gamingtags.com/ 10 indiagram.com/index.php 11 goesby.com/ 12 teachershare.org/openig/ 13 chaamp.com/ 14 a1-webmarks.com/ 15 tektag.com/ 16 bookmark.it/ 17 wirefan.com/ 18 linkatopia.com/ 19 optimiz.us/ 20 web20toolbar.com/ 21 stumbleupon.com/ Thanks!
I read about this list in another thread, it should interests you : http://dofollowbookmarkingsites.blogspot.com/
Here it is check this out.... http://www.bloglines.com/ http://www.mixx.com/ http://www.reddit.com/ http://www.propeller.com/ http://www.ning.com/ http://www.netvibes.com/ http://www.43things.com/ http://www.folkd.com/ http://www.newsvine.com/ http://www.ballhype.com/ http://www.blinklist.com/ http://www.multiply.com/ http://www.care2.com/news http://www.kuro5hin.org/ http://www.esnips.com/ http://www.dzone.com/ http://www.sphinn.com/ http://www.clipmarks.com/ http://www.backflip.com/ http://www.claimid.com/ http://www.kwoff.com/ http://www.kirtsy.com http://www.twine.com/ http://www.tipd.com/ http://www.wikia.com/ http://www.spotback.com/ http://www.indianpad.com/ http://www.corank.com/ http://www.spurl.net/ http://www.searchles.com/ Best
Here some social bookmarking huge list, thongstrings.com bittorrental.com hotmaw.com quwaii.com crawlerbots.com lawfavorites.com fcc.com linkvote.com jetmarks.com socialogs.com
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