When your organization's web site or intranet has hundreds of contributors, how do you ensure that every page is high quality and extremely usable? Especially, if these contributors have never designed a web page before?
You should only publish on your website the content that you can professionally manage. Managing content involves managing its entire life cycle. The life of a particular piece of content begins with its first draft. It ends when that content is removed from publication. Removing content is as important as publishing it.