Consider this:  both visitors and search engines alike prefer to visit updated websites where content is added on a regular basis.  Why?  It communicates to them that you are staying current, you care enough to provide pertinent, updated information, and you are concernecd about meeting the needs of your customers. 

Your website needs regular maintenance.  Things like updating the content and graphics, keeping the web site current to showcase the latest products and services that your business offers, communicating changes in your company, and adding the latest features currently used by your customers not only provide important information but tell your visitors and the search engines that you are an expert in your field.

As your business grows, new products and services will need to be added, prices will change, and old products and services will need to be removed.  When you keep your web site up-to-date with website maintenance, you leverage your online business above the competition.