Yesterday, I have first had experience of what social bookmarking can do for your article. I posted and article at Directory of SEO link blogs a few days ago. The title of the artilce was free bid for position director script . To my suprised when I searched for that keywords in Google, article at Bagi's blogs was first, another site come second and the 3rd and 4th were location at Digg and Netscape where Bagi had socially bookmarked the article. This made me change my mind about social bookmarking, in terms of ho it can help you SERP sanyway. Both locations where Bagi had bookmarked the article also have links to bagi's site as well as directly to the article.