Migrating from Typo3 to WordPress
I wonder if anyone’s still using Typo3? This could be useful if you’re planning to migrate to WP. You can get a MU-specific plugin there, too, which may / may not work on plain vanilla WP, but at least the code should be worth a check.

I guess over 90% of Germany uses TYPO3 and lots of countries in Western Union use it too. The coverage is just expanding.
Check this out:
http://blogue.infoglobe.ca/2008/10/22/51-typo3-sites-which-you-may-not-have-known-were-typo3-based/