the law of cms urls states that
The more expensive the CMS, the crappier the URLs. Compare, for instance, StoryServer’s weird comma-delimited numeric URLs to Radio UserLand’s human-readable (and guessable) URLs. Then compare the prices – orders of magnitudes of difference. So, at least in this respect, there’s an inverse relationship between price and quality.
zope, midgard and the new postnuke are on the right path, fortunately 🙂