WordPress MultiUser, or WPMU for short, is primarily Donncha’s initiative to provide a method to create multiple wordpress blogs, one for each user. You can install it and use it to enable the easy setting up of blogs for a lot of users, for example. This still not a multi-blog solution, since you do not yet have a page, or set of pages from where you can manage all the weblogs you set up.

WPMU did not have a page to setup new blogs, the process involved some command line work, until now. Donncha announces a Registration Page (still alpha) for WPMU. This is a good development, making it easier for you to setup new blogs using WPMU. Thanks Donncha!