Why do you need to share your articles to other websites, it'll get index faster and as well drive traffic to your website. Is a good idea to link back to your old article after writing your new article, so visitors can spend more time with your site examining your content after submitting it to those site listed below.
If anyone publishes a fresh article. it takes some time for google to help index it, and that is not really the only reason. You need to spend kitty time promoting your articles especially if your site is New or you are not getting an enough page view per day. So you don't have to wait for traffic coming from search engine alone.
http://www.squidoo.com
http://www.Delicious.com
http://www.slashdot.org
http://www.Tchnorati.com
http://www.connotea.org
http://www.scoop.it
http://www.newsvine.com
http://www.Digg.com
http://www.diigo.com
http://www.jumptags.com
http://www.plurk.com
http://www.linkarena.com
http://www.metafilter.com
http://www.blinklist.com
http://www.ideaoverten.com
http://www.icio.de
http://www.wikio.com
http://www.marketingland.com
http://www.svejo.net
http://www.jeteye.com
http://www.pusha.se
http://www.designbump.com
http://www.twicsy.com
http://www.br.wwwhatsnew.com
http://www.kirtsy.com
http://www.blogmarks.net
http://www.faves.com
http://www.Kirtsy.com
http://www.hite.me
http://www.blogmemes.net
http://www.ShoutWire.com
http://www.ClipClip.com
http://www.a1-webmarks.com
http://www.plugim.com
http://www.fwisp.com
http://www.ilinking.org
http://www.spletarna.net
http://www.blogospherenews.com
http://www.myhq.com
http://www.wirefan.com
http://www.ezyspot.com
http://www.linkatopia.com
http://www.lintas.me
http://www.givealink.org