The reason many academics start their own websites is the usually very slow pace at which profiles on official university websites are updated. Often a web profile will list publications from 2009 as being "in press" or worse. A simple solution is to allow academics to update their own pages. In the past this would have resulted in very unpretty website full of all kinds of strange edits. But now content management systems allow users to make changes to content without being able to damage the overall look. Well, that's the theory, anyway. Today, the Crawford School rolled out new academic profiles that each individual academic can edit using the Drupal content management system. I've already updated my publication list so that my PLOS ONE paper is no longer listed as "in press" two years on.