Fresh, relevant content is vital to improving your website marketing. When Google or the other search engines crawl your website, they look to see if there is any new content on there. Then they check to see if that content is relevant. It will then start to list the page or pages in the search engine result listings ranking it based on a number of factors.
The search engine giants such as Google and Bing, like to see websites that are constantly adding new content as it gives them the impression that this business is offering up to date information on a regular basis. This can help greatly in terms of your online marketing
A blog is a great way to add new content to your website without cluttering up the main navigation. It allows multiple pages to be added as often as you wish whilst not interfering with the main website layout.