Badass exciting news! Wordpress released its multiuser version of Wordpress today. This is essentially the same engine that powers Wordpress.com. It allows you to not only manage one wordpress blog but thousands. I am like a kid in a candy store with this thing. The potential for this release is huge. Go to http://mu.wordpress.org/download/ to download yourself a copy or go to the MU Wordpress website for more information. It also has support for the catch all subdomains(x.yoursite.com) so be prepared for that.