Relevance in Search Results

The ongoing pursuit by Google for greater relevance in search engine results has been shown in Patent filing #20050071741 - Information Retrieval Based on Historical Data. From now on Google algorithm will analyze the history of your web pages and the history of links to your website. All the information gathered will be used to determine relevance. If you want to prevent your website from disappearing in search results you need to create new content on existing pages and keep adding new web pages.