I am working for ICD-9 Codes keyword past 18-24 months. submit around 250s articles to targeted the same keywords. Used 1000s unique directory sites. Worked on press release. Social Bookmarking Facebook / Twitter/ Linkedin promotion Still this keyword is on 15th no. It is ranking good on yahoo/Bing. But never achieve top 10. My landing page http://www.supercoder.com/code-lookup/icd9/ Can anyone suggest me whats wrong there????