Keeping your site looking "fresh" is vitally important.  In this way you give visitors a reason to return again in the future and give the site a general appearance of "life".  A site that is not regularly updated takes on a stale property and gives the impression to the viewer that perhaps the organization owning the site is no longer in business or otherwise "sloppy" in some way.

  Integration of regular feeds covering various topics is a great way to automatically include new content on a daily basis, without any additional work on your part.  Any number of these feeds can be built within your site.  They can be "mixed and matched" and scattered throughout, whatever "look" works for you!   

Other examples: