I just wanted to say thank you for this plugin. It works great on my WPMU 3.1 site with MANY other plugins from WPMU DEV.
I paid good money to be a member at WPMU DEV and as they claim to be "experts" on WordPress, they won't even bother to answer questions on how to do what your plugin does.
WPMU DEV support is not as they advertise. Their plugins are NOT fully compatible as they advertise either.