Your website should be updated as often as possible. Updating your website often can make a drastic difference in your search engine ranking. Search engines are always looking for new information; pages that are not updated for long periods of time will lose rank on search engines, while pages that are updated frequently will gain rank.   Basically updating your website is free marketing for the small cost of writing some words. For some companies and websites this is easier than others. However, it is important to update your website with any new pertinent information as soon as it is available.