Web content management a process, not a project is a nice post by Gerry McGovern.
The gist is that if you treat your site as a project it will begin to age and get out of date the minute the “project” is completed. Treating your site as an ongoing management process helps to avoid some of those problems. However, it does take more time, resources and dedication than a one-off project, which is why many organizations don’t go that route.
(Spotted via Column Two.)