You’ve done the Information Architecture (IA) of the site months ago, the high resolution (graphic) designs of the side are finished, the site is cut and have been implemented into the CMS. The client has been busy filling the IA structure with content. This is when you discover that the carefully mapped menus are suddenly growing.
Now anyone involved in the web industry knows that a web site will only remain static and unchanged for a few minutes (at best) after you launch. So why the concern about the menu creep. Well just like with your interface style guide you would have left with the client (which they will ignore) you would also ensured that they have a hierarchy and navigation guide.
