WordPress MU is multi-user version of the famous WordPress blogging application. It is ideal for people wanting to offer a hosted version of WordPress. Using WordPress Multi-user edition you will be able to people be able to sign up for a new blog and have them securely manage their templates and settings without affecting any other users. Only one blog per user is allowed, but you can have unlimited users, and you can have multiple users on a single blog.
I will test the website on www.bangkoktalk.tv, if you are interested to participate testing and maybe building the website you’re welcome!
More information about my motives can be found here (dutch)