For the past week i've been submitting keyword optimized articles to various directories such as Ezinearticles articlesbase pubarticles sooperarticles Each of my submitted content is completely unique and have one or two links pointing to my site with my keyword in the anchor text. After the article is approved I bookmark them (digg/stumbleupon/delicious/reddit) followed by pinging the url via pingler. Haven't seen a significant impact on the keywords yet and it takes quite a bit of time. Can someone suggest if what i'm doing is right? Or is there something else that i'm missing out on?