I setup my new blog hosting business. BlogKa free blog with 20MB space.
At first I need to setup Wordpress mu for multiple blog host. But it not support by Wordpress (Because they setup thier own blog business Wordpress.com).
In my opinion Wordpress mu not suits for multiple blog hosting. (for now) Because they lack of admin features, include editable theme (remove in new version) and mass advertises, plugins and more. It's free but i can't wait and try a new version every month. I still use Wordpress as single blog site. It's great. Maybe next version of mu can do better.