I am actively testing the newest versions of WordPress MU. There are some nice features that will make the site more conducive to academic settings. The first is the ability to just have a username without having a blog. This will allow a person to set up a community blog without killing the database by having tons of tables for people that aren’t going to use them. There are also a lot of fixes and general improvements that make it more stable. I am hoping to be able to upgrade and maintain all the current blogs. An update will probably happen sometime in July.