I just started building 2 mns and for each article i post, i create web 2.0 sites and social bookmark them. I have been using the list that was provided here. blackhatworld.com/blackhat-seo/black-hat-seo/393145-new-web2-0-blog-list-over-100-updated.html But once i finish off with them, the website ranks for just a week or and then goes down to page 2. I don't make use of any tools and post everything manually. What can i do to keep rank my website on a constant basis? Should i create web 2.0's given in the list a second time? (I have not created any forum profiles neither did i do any kind of spamming.) Should i start with forum profiles and blog commenting?